Pub Date : 2013-12-01DOI: 10.1109/WRAP.2013.6917664
S. Mondal, S. Singh, S. Mukherjee, A. Date, P. Datta, S. Mukhopadhyay
A complete theoretical investigation on an end pumped cw Nd:YVO4 laser mode-locked using soft-aperturing and cascading of second order nonlinearities in an intracavity KTP crystal are reported and also verified with previously done experiment.
{"title":"Investigation on stability of cascaded second order mode-locking","authors":"S. Mondal, S. Singh, S. Mukherjee, A. Date, P. Datta, S. Mukhopadhyay","doi":"10.1109/WRAP.2013.6917664","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917664","url":null,"abstract":"A complete theoretical investigation on an end pumped cw Nd:YVO4 laser mode-locked using soft-aperturing and cascading of second order nonlinearities in an intracavity KTP crystal are reported and also verified with previously done experiment.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124746443","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917627
S. Behera, J. Joseph
Broadband circular polarizer based on nanophotonic metamaterial helices is designed and effect of the helical phase between intertwined helices is studied. The proposed structure increases the average extinction ratio above fifty percent.
{"title":"Effect of helical phase on the optical performance of photonic metamaterial based broadband circular polarizer","authors":"S. Behera, J. Joseph","doi":"10.1109/WRAP.2013.6917627","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917627","url":null,"abstract":"Broadband circular polarizer based on nanophotonic metamaterial helices is designed and effect of the helical phase between intertwined helices is studied. The proposed structure increases the average extinction ratio above fifty percent.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123379234","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917684
Sanjeev Kumar, A. Kapoor, F. Singh
Zinc oxide (ZnO) thin film is grown on glass substrate by the sol-gel spin coating technique. The prepared film annealed at 450 °C. X-ray diffraction shows that the ZnO Film is polycrystalline with (002) preferential orientation. We have found the Surface roughness was minimum (12.4 nm) by atomic force microscopy. The optical band gap is found to be 3.12±0.01 eV by UV-visible Spectroscopy. The Wave guiding properties of the thin film has been also studied. The results indicate that our film is monomode at 632.8 nm with propagation optical loss estimated around 1.6 dB/cm.
{"title":"Structural enhancement of ZnO thin films by sol-gel process for photonic applications","authors":"Sanjeev Kumar, A. Kapoor, F. Singh","doi":"10.1109/WRAP.2013.6917684","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917684","url":null,"abstract":"Zinc oxide (ZnO) thin film is grown on glass substrate by the sol-gel spin coating technique. The prepared film annealed at 450 °C. X-ray diffraction shows that the ZnO Film is polycrystalline with (002) preferential orientation. We have found the Surface roughness was minimum (12.4 nm) by atomic force microscopy. The optical band gap is found to be 3.12±0.01 eV by UV-visible Spectroscopy. The Wave guiding properties of the thin film has been also studied. The results indicate that our film is monomode at 632.8 nm with propagation optical loss estimated around 1.6 dB/cm.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129843165","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917671
I. Mehra, N. Nishchal
In this paper, we claim that asymmetric cryptosystem using spherical wave illumination is vulnerable against specific attack. The combination of spherical wave parameters can easily be obtained in order to decrypt the image through specific attack. We also suggested an improvement so that asymmetric cryptosystem based on spherical wave illumination resists such attacks.
{"title":"Vulnerability of asymmetric cryptosystem based on spherical wave illumination against specific attack","authors":"I. Mehra, N. Nishchal","doi":"10.1109/WRAP.2013.6917671","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917671","url":null,"abstract":"In this paper, we claim that asymmetric cryptosystem using spherical wave illumination is vulnerable against specific attack. The combination of spherical wave parameters can easily be obtained in order to decrypt the image through specific attack. We also suggested an improvement so that asymmetric cryptosystem based on spherical wave illumination resists such attacks.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121426566","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917622
R. V. Vinu, R. Singh, M. Sharma, P. Senthilkumaran
In this paper, generation of the Dammann grating by using the spatial light modulator (SLM) is discussed, and quality of the grating is examined by using the polarization interferometer and Fourier fringe analysis technique.
{"title":"Evaluation of Dammann grating using polarization interferometer","authors":"R. V. Vinu, R. Singh, M. Sharma, P. Senthilkumaran","doi":"10.1109/WRAP.2013.6917622","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917622","url":null,"abstract":"In this paper, generation of the Dammann grating by using the spatial light modulator (SLM) is discussed, and quality of the grating is examined by using the polarization interferometer and Fourier fringe analysis technique.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132819388","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917651
S. Bose, R. Chattopadhyay, M. Pal, S. Bhadra
Supercontinuum generation in suspended core photonic crystal fiber is experimentally reported pumped with picosecond pulse at 30mW. Three different dimensions of fabricated fibers with distinct dispersion properties are employed to generate broadband white light source.
{"title":"Effect of dispersion on supercontinuum generation of suspended core photonic crystal fiber","authors":"S. Bose, R. Chattopadhyay, M. Pal, S. Bhadra","doi":"10.1109/WRAP.2013.6917651","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917651","url":null,"abstract":"Supercontinuum generation in suspended core photonic crystal fiber is experimentally reported pumped with picosecond pulse at 30mW. Three different dimensions of fabricated fibers with distinct dispersion properties are employed to generate broadband white light source.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124170105","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917703
R. Bhattacharjee, K. Senthilnathan, P. R. Babu, S. Sivabalan, Kaliyaperumal Nakkeeran
We model 8-fold photonic quasi-crystal fiber (PQF) for computing the relative efficiency of second harmonic generation (SHG). Analysis shows 15% increment in SHG relative efficiency in 8-fold (72.36%W-1cm-2) compared to 6-fold (62.96 % W-1cm-2) PQF.
{"title":"Designing an eight-fold photonic quasi-crystal fiber for enhancing the efficiency of second harmonic generation","authors":"R. Bhattacharjee, K. Senthilnathan, P. R. Babu, S. Sivabalan, Kaliyaperumal Nakkeeran","doi":"10.1109/WRAP.2013.6917703","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917703","url":null,"abstract":"We model 8-fold photonic quasi-crystal fiber (PQF) for computing the relative efficiency of second harmonic generation (SHG). Analysis shows 15% increment in SHG relative efficiency in 8-fold (72.36%W<sup>-1</sup>cm<sup>-2</sup>) compared to 6-fold (62.96 % W<sup>-1</sup>cm<sup>-2</sup>) PQF.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130616106","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917697
P. Prabhu, R. John
We demonstrate a digital holographic microscope platform for phase imaging of micron scale samples. A method for quantitative phase visualization and compensation of the aberrations in coherence microscopic imaging is proposed. Preliminary results are presented as proof of concept for aberration corrections.
{"title":"Quantitative phase visualization and aberration correction using digital holographic microscope","authors":"P. Prabhu, R. John","doi":"10.1109/WRAP.2013.6917697","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917697","url":null,"abstract":"We demonstrate a digital holographic microscope platform for phase imaging of micron scale samples. A method for quantitative phase visualization and compensation of the aberrations in coherence microscopic imaging is proposed. Preliminary results are presented as proof of concept for aberration corrections.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123029558","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917649
R. Pandya, V. Chandra, D. Chadha
To achieve Power Economy (PE), transparency is introduced which lacks in signal regeneration. This, results in noise accumulation due to the impairments. The trade-off between PE and Impairment Awareness (IA) is simulated in OptSim.
{"title":"Trade-off between Impairment Awareness and Power Economy in optical WDM networks","authors":"R. Pandya, V. Chandra, D. Chadha","doi":"10.1109/WRAP.2013.6917649","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917649","url":null,"abstract":"To achieve Power Economy (PE), transparency is introduced which lacks in signal regeneration. This, results in noise accumulation due to the impairments. The trade-off between PE and Impairment Awareness (IA) is simulated in OptSim.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130053665","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 : 2013-12-01DOI: 10.1109/WRAP.2013.6917704
P. K. Maharana, R. Jha
An ultra-stable high performance SPR sensor based on graphene on Ag configuration is proposed. The proposed sensor shows enhanced performance as compared to widely reported Au on Ag configuration.
{"title":"Enhancing performance of SPR sensor through electric field intensity enhancement using graphene","authors":"P. K. Maharana, R. Jha","doi":"10.1109/WRAP.2013.6917704","DOIUrl":"https://doi.org/10.1109/WRAP.2013.6917704","url":null,"abstract":"An ultra-stable high performance SPR sensor based on graphene on Ag configuration is proposed. The proposed sensor shows enhanced performance as compared to widely reported Au on Ag configuration.","PeriodicalId":386455,"journal":{"name":"Workshop on Recent Advances in Photonics (WRAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130874177","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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