Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264609
L. Benmohammadi, I. Braun, M. Ganschow, K. Koch, F. Laeri, J. U. Nockel, G. Schulz-Ekloff, F. Schuth, U. Vietze, O. Weiss, J. Wiersig, D. Wohrle
Nanoporous materials in the form of molecular sieves are used to host various laser active guest centers, such as organic dyes and rare earth ions. For the enclosed centers the nanoporous host constitutes an environment with unique quality. We discuss the general optical character of those materials, as well as the properties of the resulting microlasers.
{"title":"Microlasers based on nanoporous materials","authors":"L. Benmohammadi, I. Braun, M. Ganschow, K. Koch, F. Laeri, J. U. Nockel, G. Schulz-Ekloff, F. Schuth, U. Vietze, O. Weiss, J. Wiersig, D. Wohrle","doi":"10.1109/ICTON.2003.1264609","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264609","url":null,"abstract":"Nanoporous materials in the form of molecular sieves are used to host various laser active guest centers, such as organic dyes and rare earth ions. For the enclosed centers the nanoporous host constitutes an environment with unique quality. We discuss the general optical character of those materials, as well as the properties of the resulting microlasers.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129730916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264635
E. Chmielewska, W. Urbańczyk, P. Hlubina
Sensing characteristics of Bragg grating imprinted in a three-mode elliptical core fiber were investigated in details. The grating sensitivities to temperature and to strain were measured for each polarization and spatial mode. The experimental results show that the grating sensitivity to temperature and strain is almost identical for all modes. We also modeled the sensitivity of the host elliptical core fiber to these two parameters. We noticed relatively good agreement between the sensitivities of the grating determined in our experiment and the calculated sensitivities of the host fiber for respective modes.
{"title":"Sensitivity of Bragg grating imprinted in a three-mode elliptical core fiber to temperature and to strain","authors":"E. Chmielewska, W. Urbańczyk, P. Hlubina","doi":"10.1109/ICTON.2003.1264635","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264635","url":null,"abstract":"Sensing characteristics of Bragg grating imprinted in a three-mode elliptical core fiber were investigated in details. The grating sensitivities to temperature and to strain were measured for each polarization and spatial mode. The experimental results show that the grating sensitivity to temperature and strain is almost identical for all modes. We also modeled the sensitivity of the host elliptical core fiber to these two parameters. We noticed relatively good agreement between the sensitivities of the grating determined in our experiment and the calculated sensitivities of the host fiber for respective modes.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"62 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120919058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1263142
X. Yang, D. Lenstra, A. K. Mishra, H. Waardt, G. Khoe, H. Dorren
We apply a new rate-equation model to study the propagation of sub-picosecond optical pulses in a semiconductor optical amplifier (SOA). This model accounts for the dynamics of important ultrafast intraband processes in SOAs, such as two-photon absorption, free-carrier absorption, self- and cross phase modulation, self- and cross polarisation modulation, carrier heating, spectral and spatial hole burning. Using our model, we have obtained numerical results for the carrier/gain dynamics, the amplitude/phase changes of 200fs optical pulses as well as the nonlinear polarization rotation induced by the optical pulse in pump-probe experiments in a SOA. These results are in good agreement with our preliminary experimental measurements, which confirms that SOAs are good candidates for all-optical ultrafast switching devices in optical communication systems.
{"title":"Propagation of ultrashort optical pulses in a semiconductor optical amplifier: simulation and experiments","authors":"X. Yang, D. Lenstra, A. K. Mishra, H. Waardt, G. Khoe, H. Dorren","doi":"10.1109/ICTON.2003.1263142","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1263142","url":null,"abstract":"We apply a new rate-equation model to study the propagation of sub-picosecond optical pulses in a semiconductor optical amplifier (SOA). This model accounts for the dynamics of important ultrafast intraband processes in SOAs, such as two-photon absorption, free-carrier absorption, self- and cross phase modulation, self- and cross polarisation modulation, carrier heating, spectral and spatial hole burning. Using our model, we have obtained numerical results for the carrier/gain dynamics, the amplitude/phase changes of 200fs optical pulses as well as the nonlinear polarization rotation induced by the optical pulse in pump-probe experiments in a SOA. These results are in good agreement with our preliminary experimental measurements, which confirms that SOAs are good candidates for all-optical ultrafast switching devices in optical communication systems.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121497725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264644
S. Boriskina, T. Benson, P. Sewell, A. Nosich
A full-vectorial boundary integral equation method is presented for calculating the resonant spectra of arbitrary shape 2-D dielectric cavities together with near-field and far-field patterns and Q-factors. Very fast, stable and robust algorithms developed based on the method enable us to simulate and optimize the performance of WG-mode optical microcavities widely used in dense WDM systems. The. effect on the cavity characteristics of introducing special deformations and/or evanescent coupling to bus waveguides is analyzed. Frequency tuning and Q-factor control is demonstrated.
{"title":"Regularized boundary integral equation method for CAD and optimization of optical microcavities","authors":"S. Boriskina, T. Benson, P. Sewell, A. Nosich","doi":"10.1109/ICTON.2003.1264644","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264644","url":null,"abstract":"A full-vectorial boundary integral equation method is presented for calculating the resonant spectra of arbitrary shape 2-D dielectric cavities together with near-field and far-field patterns and Q-factors. Very fast, stable and robust algorithms developed based on the method enable us to simulate and optimize the performance of WG-mode optical microcavities widely used in dense WDM systems. The. effect on the cavity characteristics of introducing special deformations and/or evanescent coupling to bus waveguides is analyzed. Frequency tuning and Q-factor control is demonstrated.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123496477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264633
M. Dems, W. Nakwaski
The new self-consistent iterative approach to determination of a band structure in active photonic crystals with frequency dependent dielectric constants is proposed in this paper. The approach is intended to be used in the designing the new-generation photonic-crystal semiconductor lasers.
{"title":"The self-consistent method for determination of a band structure in photonic crystals with frequency-dependent dielectric constants","authors":"M. Dems, W. Nakwaski","doi":"10.1109/ICTON.2003.1264633","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264633","url":null,"abstract":"The new self-consistent iterative approach to determination of a band structure in active photonic crystals with frequency dependent dielectric constants is proposed in this paper. The approach is intended to be used in the designing the new-generation photonic-crystal semiconductor lasers.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"517 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116703271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264580
G. Vecchi, A. M. Malvezzi, L. Andreani, M. Patrini, G. Guizetti, F. Romanato, L. Businaro, E. Di Fabrizio, A. Passaseo, D. Peyrade, Yong Chen
Summary form only given. Second and third harmonic signals generated in reflection and diffraction from the surface of photonic crystal (PC) waveguides are considered as a spectroscopic diagnostic tool in two leading material systems: GaAs and Silicon. Measurements of second harmonic generation (SHG) in reflection from GaAs-based 2D patterned planar waveguides reveal resonant interaction of the impinging radiation with the quasi-guided modes of the photonic structure. Spectral and angular dependence of these effects reflects the structure of the sample and may be used for an accurate energy and momentum positioning of the photonic bands. Preliminary results of third harmonic generation (THG) from Si-based 1D patterned planar waveguides in the visible spectral range are also presented, indicating harmonic generation as a possible route towards systematic characterization and description of photonic structures.
{"title":"Nonlinear optical response in patterned planar waveguides","authors":"G. Vecchi, A. M. Malvezzi, L. Andreani, M. Patrini, G. Guizetti, F. Romanato, L. Businaro, E. Di Fabrizio, A. Passaseo, D. Peyrade, Yong Chen","doi":"10.1109/ICTON.2003.1264580","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264580","url":null,"abstract":"Summary form only given. Second and third harmonic signals generated in reflection and diffraction from the surface of photonic crystal (PC) waveguides are considered as a spectroscopic diagnostic tool in two leading material systems: GaAs and Silicon. Measurements of second harmonic generation (SHG) in reflection from GaAs-based 2D patterned planar waveguides reveal resonant interaction of the impinging radiation with the quasi-guided modes of the photonic structure. Spectral and angular dependence of these effects reflects the structure of the sample and may be used for an accurate energy and momentum positioning of the photonic bands. Preliminary results of third harmonic generation (THG) from Si-based 1D patterned planar waveguides in the visible spectral range are also presented, indicating harmonic generation as a possible route towards systematic characterization and description of photonic structures.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124175056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264620
I. Goncharenko, S. Helfert, R. Pregla
We analyse the distortion of the mode field distribution and radiation losses arising in curved holey fibres with different guidance mechanisms. The analysis shows that the fields of holey fibres with band gap guidance are strongly concentrated inside of the fibre and such holey fibres almost are not exposed by the bend loss. The fields of the holey fibres with effective index difference guiding spread wider until the fibre ends. Therefore, they expose substantial radiation loss on their bend. At that, these losses strongly depend on the number of holey fibre lattice periods, air hole diameter and hole separation.
{"title":"Radiation loss in curved holey fibres","authors":"I. Goncharenko, S. Helfert, R. Pregla","doi":"10.1109/ICTON.2003.1264620","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264620","url":null,"abstract":"We analyse the distortion of the mode field distribution and radiation losses arising in curved holey fibres with different guidance mechanisms. The analysis shows that the fields of holey fibres with band gap guidance are strongly concentrated inside of the fibre and such holey fibres almost are not exposed by the bend loss. The fields of the holey fibres with effective index difference guiding spread wider until the fibre ends. Therefore, they expose substantial radiation loss on their bend. At that, these losses strongly depend on the number of holey fibre lattice periods, air hole diameter and hole separation.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129128980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264607
K. Aoki, Hidetoshi Miyazaki, H. Hirayama, K. Inoshita, T. Baba, K. Sakoda, N. Shinya, Y. Aoyagi
One of the desired applications of photonic crystals is an optical integrated circuit which is equivalent to a highly integrated circuit of an electronic device. Electronic devices have adopted a three-dimensional (3D) arrangement of elements and wiring in order to formulate highly integrated components. To bring a similar success of the present electronic devices to the field of optoelectronics, the development of fabrication technologies of 3D photonic crystals must be undertaken. If all the waveguides and elements are supposed to be arranged in one 2D plane, high integration cannot be desired; waveguides will become unnecessarily long and complicated. Furthermore, realization of integrated optical circuits means that we need to be able to lay out elements made of various materials suitable to each purpose at exact positions as we designed, and connect them with intricate waveguides. The materials of the crystals are supposed to be semiconductors if we want to add active elements such as lasers and LEDs. There have been no technologies which fulfill all these requirements. Recently we have introduced a novel fabrication technology for a semiconductor 3D photonic crystal by uniting integrated circuit (IC) processing technology with micromanipulation. Four- to twenty-layered (five periods) crystals for infrared wavelength (3-4.5 micrometer) were integrated at predetermined positions on a chip with a structural error of within 50 nm. Observation of the PBG confirmed the precision of our technique. A crystal with a controlled defect was also arranged on the same chip. Numerical calculations revealed that a transmission peak observed at the upper frequency edge of the bandgap originated from the excitation of a resonant guided mode in the defective layers. This technology offers immense potential in becoming a breakthrough in the production of optical wavelength photonic crystal device. In the field of photonic crystals, our method is considered as a very eccentric approach. However, when we widely overlook the industrial production lines, it turns out that manipulation technique has already deeply taken in the field. For example, mass production of the high-density mounting circuits for mobile computing products are enabled by a manipulation robot's ultra high-speed assembly based on image recognition. In the case of photonic crystal devices, things are not easy as the case of electronic devices, because assembly in the micro world is quite different from what we experience in the macroscopic scale; surface effects and electrostatic force rule over more strongly than inertia. Moreover, part size and accuracy required for photonic crystals are about 1000 times smaller in scale of that required in electronic products. Because of these difficulties, an operator operates micromanipulation system to assemble elements one by one for now, thus not a few people claim that our technique is just a toy for research. However, if the systems for image recogniti
{"title":"Micromanipulation - as an assembly tool for three-dimensional photonic crystals","authors":"K. Aoki, Hidetoshi Miyazaki, H. Hirayama, K. Inoshita, T. Baba, K. Sakoda, N. Shinya, Y. Aoyagi","doi":"10.1109/ICTON.2003.1264607","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264607","url":null,"abstract":"One of the desired applications of photonic crystals is an optical integrated circuit which is equivalent to a highly integrated circuit of an electronic device. Electronic devices have adopted a three-dimensional (3D) arrangement of elements and wiring in order to formulate highly integrated components. To bring a similar success of the present electronic devices to the field of optoelectronics, the development of fabrication technologies of 3D photonic crystals must be undertaken. If all the waveguides and elements are supposed to be arranged in one 2D plane, high integration cannot be desired; waveguides will become unnecessarily long and complicated. Furthermore, realization of integrated optical circuits means that we need to be able to lay out elements made of various materials suitable to each purpose at exact positions as we designed, and connect them with intricate waveguides. The materials of the crystals are supposed to be semiconductors if we want to add active elements such as lasers and LEDs. There have been no technologies which fulfill all these requirements. Recently we have introduced a novel fabrication technology for a semiconductor 3D photonic crystal by uniting integrated circuit (IC) processing technology with micromanipulation. Four- to twenty-layered (five periods) crystals for infrared wavelength (3-4.5 micrometer) were integrated at predetermined positions on a chip with a structural error of within 50 nm. Observation of the PBG confirmed the precision of our technique. A crystal with a controlled defect was also arranged on the same chip. Numerical calculations revealed that a transmission peak observed at the upper frequency edge of the bandgap originated from the excitation of a resonant guided mode in the defective layers. This technology offers immense potential in becoming a breakthrough in the production of optical wavelength photonic crystal device. In the field of photonic crystals, our method is considered as a very eccentric approach. However, when we widely overlook the industrial production lines, it turns out that manipulation technique has already deeply taken in the field. For example, mass production of the high-density mounting circuits for mobile computing products are enabled by a manipulation robot's ultra high-speed assembly based on image recognition. In the case of photonic crystal devices, things are not easy as the case of electronic devices, because assembly in the micro world is quite different from what we experience in the macroscopic scale; surface effects and electrostatic force rule over more strongly than inertia. Moreover, part size and accuracy required for photonic crystals are about 1000 times smaller in scale of that required in electronic products. Because of these difficulties, an operator operates micromanipulation system to assemble elements one by one for now, thus not a few people claim that our technique is just a toy for research. However, if the systems for image recogniti","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"266 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128153271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1264605
M. Lackovic, C. Bungarzeanu
All-optical packet switching has been intensively investigated in recent years as an alternative to static, crossconnect based networks. Several switch architectures have been proposed, all of them using buffers made of fibre delay lines. The paper addresses the basic concepts of packet switching in the optical domain and describes an analytical approach to evaluate the end-to-end performance of networks employing slotted (fixed length) optical packets. Thus, for a given topology and traffic matrix, the end-to-end cell loss ratio is computed assuming an uncorrelated traffic. A network dimensioning procedure relying on this approach is also presented.
{"title":"Performance analysis of packet switched all-optical networks","authors":"M. Lackovic, C. Bungarzeanu","doi":"10.1109/ICTON.2003.1264605","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1264605","url":null,"abstract":"All-optical packet switching has been intensively investigated in recent years as an alternative to static, crossconnect based networks. Several switch architectures have been proposed, all of them using buffers made of fibre delay lines. The paper addresses the basic concepts of packet switching in the optical domain and describes an analytical approach to evaluate the end-to-end performance of networks employing slotted (fixed length) optical packets. Thus, for a given topology and traffic matrix, the end-to-end cell loss ratio is computed assuming an uncorrelated traffic. A network dimensioning procedure relying on this approach is also presented.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129394973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-06-29DOI: 10.1109/ICTON.2003.1263163
H. Gomtsyan
The paper describes and analyzes the different problems of information encoding in digital communication and storage systems. The common and sufficiently full structure scheme of these systems as the cascade connection of six encoding methods is discussed. Some main characteristics of delta modulation, Reed-Solomon codes and transmission (line) codes are also discussed.
{"title":"Encoding methods for the fiber optical communication and storage systems","authors":"H. Gomtsyan","doi":"10.1109/ICTON.2003.1263163","DOIUrl":"https://doi.org/10.1109/ICTON.2003.1263163","url":null,"abstract":"The paper describes and analyzes the different problems of information encoding in digital communication and storage systems. The common and sufficiently full structure scheme of these systems as the cascade connection of six encoding methods is discussed. Some main characteristics of delta modulation, Reed-Solomon codes and transmission (line) codes are also discussed.","PeriodicalId":272700,"journal":{"name":"Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003.","volume":"522 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123065066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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