A novel optical buffer memory with a shift register function is proposed. The buffer memory consists of a two-dimensional array of polarization bistable VCSELs, in which the bit state of the optical signal, ldquo0rdquo or ldquo1rdquo is stored as a lasing linear polarization state of 0 or 90deg. Input data stored as the polarization states of the first VCSEL are transferred to the polarization states of the second VCSEL. In our experiment using 980 nm VCSELs, 10 Gbit/s optical buffering has been successfully demonstrated. We have also demonstrated polarization bistability and all-optical flip-flop operation in 1.55 mum VCSELs.
提出了一种具有移位寄存器功能的新型光缓冲存储器。缓冲存储器由二维偏振双稳态vcsel阵列组成，其中光信号ldquo0rdquo或ldquo1rdquo的位态以0度或90度的激光线性偏振态存储。将作为第一VCSEL的偏振态存储的输入数据传输到第二VCSEL的偏振态。在980 nm的vcsel实验中，我们成功地证明了10gbit /s的光缓冲。我们还在1.55 μ m VCSELs中演示了偏振双稳性和全光触发器操作。
{"title":"Optical buffer memory based on polarization bistability in VCSELs","authors":"H. Kawaguchi","doi":"10.1109/PS.2008.4804196","DOIUrl":"https://doi.org/10.1109/PS.2008.4804196","url":null,"abstract":"A novel optical buffer memory with a shift register function is proposed. The buffer memory consists of a two-dimensional array of polarization bistable VCSELs, in which the bit state of the optical signal, ldquo0rdquo or ldquo1rdquo is stored as a lasing linear polarization state of 0 or 90deg. Input data stored as the polarization states of the first VCSEL are transferred to the polarization states of the second VCSEL. In our experiment using 980 nm VCSELs, 10 Gbit/s optical buffering has been successfully demonstrated. We have also demonstrated polarization bistability and all-optical flip-flop operation in 1.55 mum VCSELs.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127790812","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598694
M. Waldmann, R. Caspary, D. Esser, D. Wortmann, J. Gottmann, W. Kowalsky
Since green laser diodes are still not commercially available, alternative technologies like frequency doubling have to be used for compact green laser sources. The goal of this work is to develop diode pumped green erbium-doped glass up-conversion waveguide lasers, instead. Planar fluoride glass waveguides are fabricated using a spin-coating technology. Until now, planar fluoride glass film waveguides with thicknesses are achieved down to 30 mum. The waveguides were doped with up to 3 mol% erbium. Scattering losses of 0.2 dB/cm at 975 nm and strong green emission at 520 - 550 nm is observed in erbium-doped waveguides 50 mum in thickness.
{"title":"Erbium-doped fluoride glass waveguides","authors":"M. Waldmann, R. Caspary, D. Esser, D. Wortmann, J. Gottmann, W. Kowalsky","doi":"10.1109/ICTON.2008.4598694","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598694","url":null,"abstract":"Since green laser diodes are still not commercially available, alternative technologies like frequency doubling have to be used for compact green laser sources. The goal of this work is to develop diode pumped green erbium-doped glass up-conversion waveguide lasers, instead. Planar fluoride glass waveguides are fabricated using a spin-coating technology. Until now, planar fluoride glass film waveguides with thicknesses are achieved down to 30 mum. The waveguides were doped with up to 3 mol% erbium. Scattering losses of 0.2 dB/cm at 975 nm and strong green emission at 520 - 550 nm is observed in erbium-doped waveguides 50 mum in thickness.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129206406","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598746
L. Stampoulidis, E. Kehayas, P. Bakopoulos, Panagiotis Zakynthinos, D. Petrantonakis, D. Apostolopoulos, O. Zouraraki, H. Avramopoulos
We present recent advances in functional photonic integration and its application for the realization of photonic Tb/s routing. Specifically, we report on the transition from single element to multi-element photonic devices with the fabrication of the first hybrid integrated arrays of optical switches using the silica on-silicon hybrid photonic integration technique. We demonstrate how the enhanced processing power of these components can be exploited to implement key functionalities required in next generation, fully integrated, Tb/s photonic routers.
{"title":"Enabling Tb/s photonic routing: Development of advanced hybrid integrated photonic devices to realize high-speed, all-optical networking","authors":"L. Stampoulidis, E. Kehayas, P. Bakopoulos, Panagiotis Zakynthinos, D. Petrantonakis, D. Apostolopoulos, O. Zouraraki, H. Avramopoulos","doi":"10.1109/ICTON.2008.4598746","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598746","url":null,"abstract":"We present recent advances in functional photonic integration and its application for the realization of photonic Tb/s routing. Specifically, we report on the transition from single element to multi-element photonic devices with the fabrication of the first hybrid integrated arrays of optical switches using the silica on-silicon hybrid photonic integration technique. We demonstrate how the enhanced processing power of these components can be exploited to implement key functionalities required in next generation, fully integrated, Tb/s photonic routers.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127344067","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598769
J. A. Martín-González, E. Poves, F. J. López-Hernández
We propose a novel family of optical codes to be used in intra-satellite optical wireless networks. They are algorithm optical codes (ADCs). This family is related with the recently introduced family random optical codes (ROCs). Both families of codes are designed to be used in optical code-division multiple-access (OCDMA) systems. Similarly than their predecessor, i.e. ROCs, ADCs are specially suitable for optical networks where the number of channels varies, ever large, low bit rate requirements, energy limitations and packed data are presented. For example sensor networks demand these requirements. A detailed description of AOCs is shown in this paper. Furthermore a comparison between them and ROCs is presented. We find that AOCs provide less probability of error than ROCs, for a given length of the code and a number of users. Moreover a system using AOCs can change the length of the code easier than a system using ROCs. This fact permits a more efficient accommodation to the actual number of users. Finally the implementation in an intra-spacecraft telecommand and telemeasurement (TC/TM) optical wireless network is also described. We compare the families in the intra-spacecraft optical wireless network.
{"title":"Algorithm Optical Codes: An alternative to Random Optical Codes in an intra-satellite optical wireless network","authors":"J. A. Martín-González, E. Poves, F. J. López-Hernández","doi":"10.1109/ICTON.2008.4598769","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598769","url":null,"abstract":"We propose a novel family of optical codes to be used in intra-satellite optical wireless networks. They are algorithm optical codes (ADCs). This family is related with the recently introduced family random optical codes (ROCs). Both families of codes are designed to be used in optical code-division multiple-access (OCDMA) systems. Similarly than their predecessor, i.e. ROCs, ADCs are specially suitable for optical networks where the number of channels varies, ever large, low bit rate requirements, energy limitations and packed data are presented. For example sensor networks demand these requirements. A detailed description of AOCs is shown in this paper. Furthermore a comparison between them and ROCs is presented. We find that AOCs provide less probability of error than ROCs, for a given length of the code and a number of users. Moreover a system using AOCs can change the length of the code easier than a system using ROCs. This fact permits a more efficient accommodation to the actual number of users. Finally the implementation in an intra-spacecraft telecommand and telemeasurement (TC/TM) optical wireless network is also described. We compare the families in the intra-spacecraft optical wireless network.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"192 S536","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132905251","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598601
I. Goncharenko, A. Esman, V. Kuleshov, M. Marciniak
We propose a novel concept of image converter from an infrared range into a visible range of electromagnetic waves by the use of waveguide resonator structures of a micron size as a sensitive element. The method is based on the modulation of the resonator proper equidistant spectrum under the influence of the external electromagnetic radiation of the infrared spectral range, which changes the optical properties of the sensitive element material. The structure and principles of operation of the matrix converter of infrared images into visible ones on the base of a matrix of the waveguide microring resonators are investigated. It is shown that sensitivity of such converter to the variation of infrared radiation power can be as low as 2.6middot10-12 W.
{"title":"Matrix infrared-visible image converter based on waveguide microring resonators","authors":"I. Goncharenko, A. Esman, V. Kuleshov, M. Marciniak","doi":"10.1109/ICTON.2008.4598601","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598601","url":null,"abstract":"We propose a novel concept of image converter from an infrared range into a visible range of electromagnetic waves by the use of waveguide resonator structures of a micron size as a sensitive element. The method is based on the modulation of the resonator proper equidistant spectrum under the influence of the external electromagnetic radiation of the infrared spectral range, which changes the optical properties of the sensitive element material. The structure and principles of operation of the matrix converter of infrared images into visible ones on the base of a matrix of the waveguide microring resonators are investigated. It is shown that sensitivity of such converter to the variation of infrared radiation power can be as low as 2.6middot10-12 W.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130373108","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598383
L. Al Kanj, S. Hellerbrand, N. Hanik
PMD is regarded one of the main impairments in optical fibers due to the pulse broadening that it induces causing limitations in range and quality. It is well known that PMD may arise from a very bad section within a long fiber due to some external forces such as torsion, bending, etc. This work investigates the effect of the position of a bad fiber within a long link; the bad fiber is investigated in three places, at the beginning, the middle and the end of the fiber link.
{"title":"Effect of the position of a highly birefringent fiber segment on the total PMD of a fiber link","authors":"L. Al Kanj, S. Hellerbrand, N. Hanik","doi":"10.1109/ICTON.2008.4598383","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598383","url":null,"abstract":"PMD is regarded one of the main impairments in optical fibers due to the pulse broadening that it induces causing limitations in range and quality. It is well known that PMD may arise from a very bad section within a long fiber due to some external forces such as torsion, bending, etc. This work investigates the effect of the position of a bad fiber within a long link; the bad fiber is investigated in three places, at the beginning, the middle and the end of the fiber link.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130420334","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598762
B. Schrenk, M. Omella, J. Lázaro, J. Prat
In this paper, an approach for wavelength generation in the C-band at the remote node of a passive optical network is experimentally demonstrated. The upstream wavelength is established in a loop configuration by a remotely pumped Erbium-doped fiber and a wavelength selective feedback. By combining this upstream channel modulated at 1 Gb/s by a cheap and simple device at the customer premises with a downstream signal modulated at 10 Gb/s, a cost-effective solution for long reach access networks with a high density of possible customers is given by taking advantage of utilizing the L-band for separation of the data streams and extending the numbers of useable wavelength channels.
{"title":"Remote wavelength generation for upstream transmission in time and wavelength division multiplexed passive optical networks with C- and L-Band utilization","authors":"B. Schrenk, M. Omella, J. Lázaro, J. Prat","doi":"10.1109/ICTON.2008.4598762","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598762","url":null,"abstract":"In this paper, an approach for wavelength generation in the C-band at the remote node of a passive optical network is experimentally demonstrated. The upstream wavelength is established in a loop configuration by a remotely pumped Erbium-doped fiber and a wavelength selective feedback. By combining this upstream channel modulated at 1 Gb/s by a cheap and simple device at the customer premises with a downstream signal modulated at 10 Gb/s, a cost-effective solution for long reach access networks with a high density of possible customers is given by taking advantage of utilizing the L-band for separation of the data streams and extending the numbers of useable wavelength channels.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117232026","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598420
H. Baghdasaryan, T. Knyazyan, T. Baghdasaryan, G.G. Eyramjyan
An extension of the method of single expression (MSE) for analysis of plane electromagnetic wave oblique incidence on a wavelength-scale multilayer structure consisting of dielectric and magnetic layers is performed. Corresponding Helmholtzpsilas equations, boundary conditions and the expression for power flow density in complex media are derived in the terms of MSE for TE and TM electromagnetic waves. TE and TM waves incidence on multilayer structures comprising alternating quarter-wavelength dielectric or magnetic layers of high and low permittivity or permeability is analysed. The reflectance peculiarities on the angle of incident wave, distributions of electric and magnetic field amplitudes inside the considered structures are obtained. For a structure consisting of dielectric or magnetic layers the full transmission state is observed at Brewster angle for TM and TE waves, correspondingly.
{"title":"Development of the method of single expression (MSE) for analysis of plane wave oblique incidence on multilayer structures having complex permittivity and permeability","authors":"H. Baghdasaryan, T. Knyazyan, T. Baghdasaryan, G.G. Eyramjyan","doi":"10.1109/ICTON.2008.4598420","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598420","url":null,"abstract":"An extension of the method of single expression (MSE) for analysis of plane electromagnetic wave oblique incidence on a wavelength-scale multilayer structure consisting of dielectric and magnetic layers is performed. Corresponding Helmholtzpsilas equations, boundary conditions and the expression for power flow density in complex media are derived in the terms of MSE for TE and TM electromagnetic waves. TE and TM waves incidence on multilayer structures comprising alternating quarter-wavelength dielectric or magnetic layers of high and low permittivity or permeability is analysed. The reflectance peculiarities on the angle of incident wave, distributions of electric and magnetic field amplitudes inside the considered structures are obtained. For a structure consisting of dielectric or magnetic layers the full transmission state is observed at Brewster angle for TM and TE waves, correspondingly.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131039415","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598378
J. Jahns, H. Knuppertz, M. Bohling, R. Grunwald, M. Bock
Microoptics offers interesting solutions for the processing and shaping of optical signals consisting of femtosecond pulses. Since one can operate either in the spectral or in the time domain, a variety of implementations exists. As an example for the spectral filtering, we demonstrate an integrated pulse shaper using far-field grating diffraction. For fabrication, ultraprecision micromachining was used. As examples for operating in the time domain, we present two approaches for the implementation of optical tapped delay lines. One is based on the use of optical near-field diffraction and the self-imaging effect. The second uses a linear retroreflector array which is demonstrated as a variable temporal beam splitter.
{"title":"Microoptical processing and shaping of ultrashort pulses","authors":"J. Jahns, H. Knuppertz, M. Bohling, R. Grunwald, M. Bock","doi":"10.1109/ICTON.2008.4598378","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598378","url":null,"abstract":"Microoptics offers interesting solutions for the processing and shaping of optical signals consisting of femtosecond pulses. Since one can operate either in the spectral or in the time domain, a variety of implementations exists. As an example for the spectral filtering, we demonstrate an integrated pulse shaper using far-field grating diffraction. For fabrication, ultraprecision micromachining was used. As examples for operating in the time domain, we present two approaches for the implementation of optical tapped delay lines. One is based on the use of optical near-field diffraction and the self-imaging effect. The second uses a linear retroreflector array which is demonstrated as a variable temporal beam splitter.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"267 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132384887","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 : 2008-06-22DOI: 10.1109/ICTON.2008.4598592
F. Poli, S. Selleri
In the present paper large mode area polygonal photonic crystal fibers with a single air-hole ring, which can be exploited for high-power fiber laser applications, have been studied. A new design that structures the air-holes in a single ring, according to a polygonal symmetry, around a solid core has been proposed. Octagonal and decagonal symmetries have been considered to design fibers less affected by the penalties arising in bending conditions, in particular the loss and the guided mode field distortion. The bending properties of different fibers with an effective area of 1400 mum2, confinement loss lower than 0.3 dB/m for the fundamental mode, and about 1 dB/m for the first higher order one at 1064 nm, have been analyzed and compared. Simulation results have shown that the mode distortion, evaluated through an overlap factor on a circular core region, as well as the loss value, can be reduced when considering photonic crystal fibers with a decagonal symmetry.
{"title":"Single air-hole ring polygonal photonic crystal fibers with reduced bending loss and field distortion","authors":"F. Poli, S. Selleri","doi":"10.1109/ICTON.2008.4598592","DOIUrl":"https://doi.org/10.1109/ICTON.2008.4598592","url":null,"abstract":"In the present paper large mode area polygonal photonic crystal fibers with a single air-hole ring, which can be exploited for high-power fiber laser applications, have been studied. A new design that structures the air-holes in a single ring, according to a polygonal symmetry, around a solid core has been proposed. Octagonal and decagonal symmetries have been considered to design fibers less affected by the penalties arising in bending conditions, in particular the loss and the guided mode field distortion. The bending properties of different fibers with an effective area of 1400 mum2, confinement loss lower than 0.3 dB/m for the fundamental mode, and about 1 dB/m for the first higher order one at 1064 nm, have been analyzed and compared. Simulation results have shown that the mode distortion, evaluated through an overlap factor on a circular core region, as well as the loss value, can be reduced when considering photonic crystal fibers with a decagonal symmetry.","PeriodicalId":230802,"journal":{"name":"2008 10th Anniversary International Conference on Transparent Optical Networks","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128208470","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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