Pub Date : 2012-07-26DOI: 10.1109/ICOE.2012.6409593
M. Madhup, A. Sharma, R. Khare
This paper presents a novel four fibers based optical fiber sensor for distributed strain measurement. The sensor is composed of two active and two passive fibers. Localized strain makes light couple from the active fiber to the passive fiber. The output of active fiber is used for strain value sensing whereas the outputs of the passive fibers are used to calculate the position of strain. Distributed sensing is realized based on the attenuation of the passive fiber, which has a greater attenuation coefficient than the active fiber. The theoretical model and limit parameter analysis, including the maximum length and the spatial resolution are proposed.
{"title":"Four fiber based distributed strain sensor","authors":"M. Madhup, A. Sharma, R. Khare","doi":"10.1109/ICOE.2012.6409593","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409593","url":null,"abstract":"This paper presents a novel four fibers based optical fiber sensor for distributed strain measurement. The sensor is composed of two active and two passive fibers. Localized strain makes light couple from the active fiber to the passive fiber. The output of active fiber is used for strain value sensing whereas the outputs of the passive fibers are used to calculate the position of strain. Distributed sensing is realized based on the attenuation of the passive fiber, which has a greater attenuation coefficient than the active fiber. The theoretical model and limit parameter analysis, including the maximum length and the spatial resolution are proposed.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121689586","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409582
A. Singh, G. Soni, A. Tripathi, A. Shrivastava
In this paper, wavelength division multiplexed optical communication system is designed based on duty cycle division multiplexing. The design is proposed for 6-users, each one assigned a different RZ duty cycle and with a data rate of 10 Gbps. A hybrid DCDM/WDM system is thus designed by modulating each group of 6-users DCDM system with different wavelength in a single channel. Using this technique, 3×60 Gbps data rate is transmitted over 50 km SSMF and recovered by using 10 GHz clock thereby utilizing the channel capacity of WDM system. The design is simulated using Optisystem ver-5 and MATLAB.
{"title":"Design of 3×60 Gbps DCDM based WDM system","authors":"A. Singh, G. Soni, A. Tripathi, A. Shrivastava","doi":"10.1109/ICOE.2012.6409582","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409582","url":null,"abstract":"In this paper, wavelength division multiplexed optical communication system is designed based on duty cycle division multiplexing. The design is proposed for 6-users, each one assigned a different RZ duty cycle and with a data rate of 10 Gbps. A hybrid DCDM/WDM system is thus designed by modulating each group of 6-users DCDM system with different wavelength in a single channel. Using this technique, 3×60 Gbps data rate is transmitted over 50 km SSMF and recovered by using 10 GHz clock thereby utilizing the channel capacity of WDM system. The design is simulated using Optisystem ver-5 and MATLAB.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125154131","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409580
T. Uthayakumar, R. Raja, K. Nithyanandan, K. Porsezian
We explore all-optical pulse coupling dynamics of nitrobenzene filled dual core photonic crystal fiber coupler (LCPCF). The optical characteristics of the proposed design is obtained using the finite element method (FEM). The optical pulse dynamics through the proposed coupler model described by a set of coupled nonlinear Schrödinger equation has been studied by projection operator method (POM). POM is an excellent analytical tool, which provides us a greater control over the study of individual pulse parameter dynamics. The obtained results clearly demonstrates the mechanism of the coupling and pulse parameter dynamics through the dual core couplers.
{"title":"Investigation of optical pulse coupling through the nitrobenzene filled photonic crystal fiber coupler — A projection operator approach","authors":"T. Uthayakumar, R. Raja, K. Nithyanandan, K. Porsezian","doi":"10.1109/ICOE.2012.6409580","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409580","url":null,"abstract":"We explore all-optical pulse coupling dynamics of nitrobenzene filled dual core photonic crystal fiber coupler (LCPCF). The optical characteristics of the proposed design is obtained using the finite element method (FEM). The optical pulse dynamics through the proposed coupler model described by a set of coupled nonlinear Schrödinger equation has been studied by projection operator method (POM). POM is an excellent analytical tool, which provides us a greater control over the study of individual pulse parameter dynamics. The obtained results clearly demonstrates the mechanism of the coupling and pulse parameter dynamics through the dual core couplers.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130613328","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409586
S. Krishnamoorthy, D. Jayavel, M. Mathew, S. Mayor, A. Prabhakar
We demonstrate the construction of a fiber based mode locked laser that is driven in synchronization with a femtosecond master laser through an RF circuit. The laser is characterized based on the pulse widths and pulse powers around the locking frequency. The cavity length of the laser was then optimized to have a match between the locking frequency and the master lasers repetition rate. Two stages of amplifiers are used to obtain the required peak powers in the pulses. Thus we have a mode locked laser that has 1 W peak pulse power for picosecond pulses at 1064 nm wavelength.
{"title":"Building a 1W, 1064 nm mode locked fibre laser","authors":"S. Krishnamoorthy, D. Jayavel, M. Mathew, S. Mayor, A. Prabhakar","doi":"10.1109/ICOE.2012.6409586","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409586","url":null,"abstract":"We demonstrate the construction of a fiber based mode locked laser that is driven in synchronization with a femtosecond master laser through an RF circuit. The laser is characterized based on the pulse widths and pulse powers around the locking frequency. The cavity length of the laser was then optimized to have a match between the locking frequency and the master lasers repetition rate. Two stages of amplifiers are used to obtain the required peak powers in the pulses. Thus we have a mode locked laser that has 1 W peak pulse power for picosecond pulses at 1064 nm wavelength.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121311777","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409564
I. Sebastian, S. Divya, V. Nampoori, P. Radhakrishnan, S. Thomas
We present the preparation and nonlinear optical characterization of nanocolloidal solutions of Ge27Ga9Se64 glass with different concentrations. Their nonlinear absorption is studied using open aperture Z-scan technique. Optical band gap of the material is be tuned by changing the concentration of the solute in the solution. Nonlinearity increases with decrease in optical band gap which in turn depends on the concentrations of the nanocolloidal solutions.
{"title":"Investigation on nonlinear properties of Ga-Ge-Se nanocolloidal solutions","authors":"I. Sebastian, S. Divya, V. Nampoori, P. Radhakrishnan, S. Thomas","doi":"10.1109/ICOE.2012.6409564","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409564","url":null,"abstract":"We present the preparation and nonlinear optical characterization of nanocolloidal solutions of Ge27Ga9Se64 glass with different concentrations. Their nonlinear absorption is studied using open aperture Z-scan technique. Optical band gap of the material is be tuned by changing the concentration of the solute in the solution. Nonlinearity increases with decrease in optical band gap which in turn depends on the concentrations of the nanocolloidal solutions.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122321780","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409565
J. F. Akki, A. S. Lalasangi, U. Raikar, V. K. Kulkarni, P. Radhakrishnan, I. I. Pattanshetty
We present long period grating (LPG) fabrication and application of LPG as chemical sensor. We fabricated LPG of grating period 610μm in single mode communication grade fiber using point by point method. Here we used 12watt CO2 laser to irradiate the fiber. The behavior of resonance wavelength of LPG was studied by immersing it in nitrate solution of concentration ranging from 10ppm to 50ppm. The results showed the linear behavior of resonance wavelength of LPG that can be used to determine the concentration of nitrate in water.
{"title":"Chemical sensor for nitrate in water using long period optical fiber grating fabricated by point by point method","authors":"J. F. Akki, A. S. Lalasangi, U. Raikar, V. K. Kulkarni, P. Radhakrishnan, I. I. Pattanshetty","doi":"10.1109/ICOE.2012.6409565","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409565","url":null,"abstract":"We present long period grating (LPG) fabrication and application of LPG as chemical sensor. We fabricated LPG of grating period 610μm in single mode communication grade fiber using point by point method. Here we used 12watt CO2 laser to irradiate the fiber. The behavior of resonance wavelength of LPG was studied by immersing it in nitrate solution of concentration ranging from 10ppm to 50ppm. The results showed the linear behavior of resonance wavelength of LPG that can be used to determine the concentration of nitrate in water.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125536238","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409589
A. Biradar, R. Thool, R. Velur, T. Indumathi
As part of the current research in the MANET it is observed that issues like dynamic topology, limited power of the nodes, error-prone shared radio channel, QoS of the like movement of the nodes are dominant. Continuous efforts of the researchers are to find the optimal solution for these issues are still far from being perfect. In order to find a possible solution space usage of natural searching techniques like genetic algorithms is used. To optimize the issue of dynamic topology power aware cluster selection and reorganization is proposed. Channel interference is a major concern to the MANET so separate data and control channels are configured with a relatively optimal band gap between those two channels. Consideration of average bandwidth, end to end delay, power of the node, relative node speed and the distance between the nodes are major QoS parameters.
{"title":"Dual channel based multi-objectives genetic routing protocol for ad-hoc networks and optical networks using power aware clustered topology","authors":"A. Biradar, R. Thool, R. Velur, T. Indumathi","doi":"10.1109/ICOE.2012.6409589","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409589","url":null,"abstract":"As part of the current research in the MANET it is observed that issues like dynamic topology, limited power of the nodes, error-prone shared radio channel, QoS of the like movement of the nodes are dominant. Continuous efforts of the researchers are to find the optimal solution for these issues are still far from being perfect. In order to find a possible solution space usage of natural searching techniques like genetic algorithms is used. To optimize the issue of dynamic topology power aware cluster selection and reorganization is proposed. Channel interference is a major concern to the MANET so separate data and control channels are configured with a relatively optimal band gap between those two channels. Consideration of average bandwidth, end to end delay, power of the node, relative node speed and the distance between the nodes are major QoS parameters.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"16 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114127628","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409591
K. Ramanujam, S. Talbatulla
In this paper we examine the energy consumption of IP Over Optical WDM Networks. As the number of Internet users increases the Internet expands in reach and capacity. This results in increased energy consumption of the network. Minimizing the power consumption, termed as “Greening the Internet”, is desirable to help service providers (SP) operate their networks and provide services more efficiently in terms of power consumption. Minimizing the operational power typically depends on the strategy (e.g., lightpath bypass, lightpath non-bypass and traffic grooming) and operations (e.g., electronic domain versus optical domain). We consider a typical optical backbone network model, and develop a model which minimizes the power consumption. Performance calculation shows that our method consumes less power compared to traffic grooming approach.
本文研究了IP Over Optical WDM网络的能量消耗。随着互联网用户数量的增加，互联网的覆盖范围和容量也在扩大。这导致了网络能耗的增加。尽量减少电力消耗，即“绿化互联网”，有助服务供应商在电力消耗方面更有效地运作其网络和提供服务。最小化操作功率通常取决于策略(例如，光路旁路，光路非旁路和流量疏导)和操作(例如，电子域与光域)。考虑一个典型的光骨干网模型，建立了一个最小功耗的模型。性能计算表明，与流量疏导方法相比，该方法功耗更低。
{"title":"Greening the IP over optical backbone network","authors":"K. Ramanujam, S. Talbatulla","doi":"10.1109/ICOE.2012.6409591","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409591","url":null,"abstract":"In this paper we examine the energy consumption of IP Over Optical WDM Networks. As the number of Internet users increases the Internet expands in reach and capacity. This results in increased energy consumption of the network. Minimizing the power consumption, termed as “Greening the Internet”, is desirable to help service providers (SP) operate their networks and provide services more efficiently in terms of power consumption. Minimizing the operational power typically depends on the strategy (e.g., lightpath bypass, lightpath non-bypass and traffic grooming) and operations (e.g., electronic domain versus optical domain). We consider a typical optical backbone network model, and develop a model which minimizes the power consumption. Performance calculation shows that our method consumes less power compared to traffic grooming approach.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124704014","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409585
A. Shahini, P. Khodashenas, H. Maleki, N. S. Khodashenas, K. Abbasian
An organic solar cell model is developed that consists of both excitonic and classical bipolar aspects of solar cells. In order to be compatible with the principle of detailed balance theory we have imported the photon recycling term in our equations. As a result we connected the Shockley-Queisser (SQ) theory to the classical diode theory. This model for excitonic and classical bipolar solar cells can describes the combined transport and interaction of electrons, holes and excitons. For high mobilities our model reproduces the Shockley Queisser efficiency limit. We show how varying the respective mobilities of the different species changes the operation mode of the solar cell path between excitonic and bipolar.
{"title":"Effect of charge carriers and excitons mobility on transport in an organic solar cell","authors":"A. Shahini, P. Khodashenas, H. Maleki, N. S. Khodashenas, K. Abbasian","doi":"10.1109/ICOE.2012.6409585","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409585","url":null,"abstract":"An organic solar cell model is developed that consists of both excitonic and classical bipolar aspects of solar cells. In order to be compatible with the principle of detailed balance theory we have imported the photon recycling term in our equations. As a result we connected the Shockley-Queisser (SQ) theory to the classical diode theory. This model for excitonic and classical bipolar solar cells can describes the combined transport and interaction of electrons, holes and excitons. For high mobilities our model reproduces the Shockley Queisser efficiency limit. We show how varying the respective mobilities of the different species changes the operation mode of the solar cell path between excitonic and bipolar.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"255 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121977686","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 : 2012-07-26DOI: 10.1109/ICOE.2012.6409561
H. Ulla, B. Garudachari, M. Satyanarayan, G. Umesh, A. Isloor
Novel blue light-emitting materials were designed by the substitution at the 4-position of 1,8-naphthalimide with electron-donating phenoxy group. The effect of molecular structure on the photophysical, electronic structure properties of the derivatives was explored by UV-visible absorption spectroscopy, photoluminescence spectroscopy, cyclic voltammetry and quantum chemical calculations. Both UV-visible absorption and emission spectra of derivatives indicate that the emission is in blue region. Electrochemical studies of the molecules revealed that they have low-lying energy levels of the lowest unoccupied molecular orbital (LUMO) and energy levels of the highest occupied molecular orbital (HOMO) indicating that the derivatives possess good electron-transporting or hole-blocking properties. To further reveal the electronic structure and the optical properties, the structural and electronic properties of the synthesized derivatives were calculated. These results indicate that molecules may offer potential as dopants as well as non-doping light-emitting materials with good electron injection capabilities for fabrication of blue organic light-emitting diodes.
{"title":"Blue light emitting materials for organic light emitting diodes: Experimental and simulation study","authors":"H. Ulla, B. Garudachari, M. Satyanarayan, G. Umesh, A. Isloor","doi":"10.1109/ICOE.2012.6409561","DOIUrl":"https://doi.org/10.1109/ICOE.2012.6409561","url":null,"abstract":"Novel blue light-emitting materials were designed by the substitution at the 4-position of 1,8-naphthalimide with electron-donating phenoxy group. The effect of molecular structure on the photophysical, electronic structure properties of the derivatives was explored by UV-visible absorption spectroscopy, photoluminescence spectroscopy, cyclic voltammetry and quantum chemical calculations. Both UV-visible absorption and emission spectra of derivatives indicate that the emission is in blue region. Electrochemical studies of the molecules revealed that they have low-lying energy levels of the lowest unoccupied molecular orbital (LUMO) and energy levels of the highest occupied molecular orbital (HOMO) indicating that the derivatives possess good electron-transporting or hole-blocking properties. To further reveal the electronic structure and the optical properties, the structural and electronic properties of the synthesized derivatives were calculated. These results indicate that molecules may offer potential as dopants as well as non-doping light-emitting materials with good electron injection capabilities for fabrication of blue organic light-emitting diodes.","PeriodicalId":142915,"journal":{"name":"2012 International Conference on Optical Engineering (ICOE)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115867005","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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