Pub Date : 2013-10-01DOI: 10.1109/ICP.2013.6687083
M. Zawawi, S. O’Keeffe, E. Lewis
This paper presents the investigation of sensing range limit for intensity modulated optical fibre bending sensor using single input and dual input fibres. Plastic optical fibre is used to measure the bending angle by measuring the changes of light intensity using tilt angle loss measurement approach. To define the bending range of the sensor configurations under investigation, the fibre was bended at several bending angle for a 30 second period purposely to reduce the effect of light source fluctuation and drift in measurement. It was found that, with the use of dual input source fibres, the bending angle range can be extended at almost twice angle range than the single input fibre but with a lower output resolution.
{"title":"Sensing range assessment of optical fibre physiological bending sensor","authors":"M. Zawawi, S. O’Keeffe, E. Lewis","doi":"10.1109/ICP.2013.6687083","DOIUrl":"https://doi.org/10.1109/ICP.2013.6687083","url":null,"abstract":"This paper presents the investigation of sensing range limit for intensity modulated optical fibre bending sensor using single input and dual input fibres. Plastic optical fibre is used to measure the bending angle by measuring the changes of light intensity using tilt angle loss measurement approach. To define the bending range of the sensor configurations under investigation, the fibre was bended at several bending angle for a 30 second period purposely to reduce the effect of light source fluctuation and drift in measurement. It was found that, with the use of dual input source fibres, the bending angle range can be extended at almost twice angle range than the single input fibre but with a lower output resolution.","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133983605","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 : 2013-10-01DOI: 10.1109/ICP.2013.6687147
Nadhira Mat Nashim, N. Arsad, Nur Hasiba Kamaruddin, A. Bakar
Electro-optic (EO) modulator is a device used primarily in optical communication systems to provide an external optical high-speed bandwidth modulation. Instead, the EO modulator can also be employed as sensing instrument with some modification. In this paper, we demonstrate the performance study of a polymer EO phase modulator compared with the commonly used waveguide material LiNbO3 to obtain better low insertion loss and length extension. Both parameters are substantial for biosensing applications such as biomedical equipment to detect human body response.
{"title":"Characterisation of a polymeric electro-optic phase modulator for sensing applications","authors":"Nadhira Mat Nashim, N. Arsad, Nur Hasiba Kamaruddin, A. Bakar","doi":"10.1109/ICP.2013.6687147","DOIUrl":"https://doi.org/10.1109/ICP.2013.6687147","url":null,"abstract":"Electro-optic (EO) modulator is a device used primarily in optical communication systems to provide an external optical high-speed bandwidth modulation. Instead, the EO modulator can also be employed as sensing instrument with some modification. In this paper, we demonstrate the performance study of a polymer EO phase modulator compared with the commonly used waveguide material LiNbO3 to obtain better low insertion loss and length extension. Both parameters are substantial for biosensing applications such as biomedical equipment to detect human body response.","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122261426","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 : 2013-10-01DOI: 10.1109/ICP.2013.6687110
H. Renner, M. Krause
We show that the threshold pump power of Raman lasers can be significantly reduced by adding a low-loss intermediate cavity while a high conversion efficiency at large pump powers is maintained.
{"title":"Cascading Raman lasers for reducing their threshold","authors":"H. Renner, M. Krause","doi":"10.1109/ICP.2013.6687110","DOIUrl":"https://doi.org/10.1109/ICP.2013.6687110","url":null,"abstract":"We show that the threshold pump power of Raman lasers can be significantly reduced by adding a low-loss intermediate cavity while a high conversion efficiency at large pump powers is maintained.","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125484543","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 : 2013-10-01DOI: 10.1109/ICP.2013.6687116
Devapriyo Mithun, S. Saha, A. Chowdhury, G. Chang
Chromatic dispersion compensation of coherent 64-QAM single carrier systems is achieved using fast block normalized LMS (FBNLMS) in frequency domain processing, which exhibits better performance and reduced computational complexities as block size increases. We have also evaluated the optimum block size to compensate CD within minimal OSNR limit.
{"title":"Frequency domain chromatic dispersion equalization by fast block normalized least mean square/or 64-QAM Optical Coherent Receiver","authors":"Devapriyo Mithun, S. Saha, A. Chowdhury, G. Chang","doi":"10.1109/ICP.2013.6687116","DOIUrl":"https://doi.org/10.1109/ICP.2013.6687116","url":null,"abstract":"Chromatic dispersion compensation of coherent 64-QAM single carrier systems is achieved using fast block normalized LMS (FBNLMS) in frequency domain processing, which exhibits better performance and reduced computational complexities as block size increases. We have also evaluated the optimum block size to compensate CD within minimal OSNR limit.","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116008533","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 : 2013-10-01DOI: 10.1109/ICP.2013.6687112
K. N. Khar, M. Shahimin, F. Adikan
Sensitivity of evanescent field sensor is highly affected by strength of evanescent field with respect to its penetration depth and intensity. However in most cases, evanescent field is not maximized and thus the performance of the sensor is not optimized. It is the aim of the paper to optimize the silicon nitride linear waveguide through simulation by using 3D FD-BPM. The resultant investigation shows that evanescent field is maximized at TM polarization, 0.9μm thickness and 4μm width waveguide. Besides, result also shows that TM-polarization results in 15.5 times stronger evanescent field at optimized physical dimension compared to TE polarization.
{"title":"Evanescent field maximization of linear silicon nitride channel waveguide","authors":"K. N. Khar, M. Shahimin, F. Adikan","doi":"10.1109/ICP.2013.6687112","DOIUrl":"https://doi.org/10.1109/ICP.2013.6687112","url":null,"abstract":"Sensitivity of evanescent field sensor is highly affected by strength of evanescent field with respect to its penetration depth and intensity. However in most cases, evanescent field is not maximized and thus the performance of the sensor is not optimized. It is the aim of the paper to optimize the silicon nitride linear waveguide through simulation by using 3D FD-BPM. The resultant investigation shows that evanescent field is maximized at TM polarization, 0.9μm thickness and 4μm width waveguide. Besides, result also shows that TM-polarization results in 15.5 times stronger evanescent field at optimized physical dimension compared to TE polarization.","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115110277","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 : 2013-03-01DOI: 10.1109/ICP.2013.6687136
A. Shabaneh, P. Arasu, S. Girei, S. Paiman, M. Mahdi, M. Yaacob, N. Huang
In this paper, optical multimode fiber reflectance sensor for ethanol with different concentrations in water was developed. The sensor was coated with graphene oxide (GO) by drop-casting technique. The dynamic response of GO nanostructured thin film coated on optical multimode fiber tip exposed to ethanol liquid was investigated. GO thin film was characterized via Raman microscopy and Scanning Electron Microscopy (SEM). The reflectance decreased by 37% when the fiber tip was exposed to 5% concentration of ethanol in water. The sensor shows fast response and recovery as low as 30 s and 45 s, respectively.
{"title":"Reflectance response of optical fiber sensor coated with graphene oxide towards ethanol","authors":"A. Shabaneh, P. Arasu, S. Girei, S. Paiman, M. Mahdi, M. Yaacob, N. Huang","doi":"10.1109/ICP.2013.6687136","DOIUrl":"https://doi.org/10.1109/ICP.2013.6687136","url":null,"abstract":"In this paper, optical multimode fiber reflectance sensor for ethanol with different concentrations in water was developed. The sensor was coated with graphene oxide (GO) by drop-casting technique. The dynamic response of GO nanostructured thin film coated on optical multimode fiber tip exposed to ethanol liquid was investigated. GO thin film was characterized via Raman microscopy and Scanning Electron Microscopy (SEM). The reflectance decreased by 37% when the fiber tip was exposed to 5% concentration of ethanol in water. The sensor shows fast response and recovery as low as 30 s and 45 s, respectively.","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115719793","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 : 1900-01-01DOI: 10.1109/ICP.2013.6687056
A. D. Raki, T. Taimre, K. Bertling, Y. Lim, P. Dean, J. Keeley, A. Valavanis, R. Alhathlool, S. Khanna, M. Lachab, D. Indjin, Z. Ikonić, P. Harrison, E. Linfield, A. Davies
The paper introduces self-mixing interferometry in semiconductor lasers in general, and then discusses recent advancements in the coherent THz imaging and sensing systems based on the self-mixing effect in terahertz quantum cascade lasers. Two different imaging modalities are used to illustrate the coherent nature of this sensing technique and its applications to three-dimensional surface profiling and material identification.
{"title":"Self-mixing effect in THz quantum cascade lasers: Applications in sensing and imaging","authors":"A. D. Raki, T. Taimre, K. Bertling, Y. Lim, P. Dean, J. Keeley, A. Valavanis, R. Alhathlool, S. Khanna, M. Lachab, D. Indjin, Z. Ikonić, P. Harrison, E. Linfield, A. Davies","doi":"10.1109/ICP.2013.6687056","DOIUrl":"https://doi.org/10.1109/ICP.2013.6687056","url":null,"abstract":"The paper introduces self-mixing interferometry in semiconductor lasers in general, and then discusses recent advancements in the coherent THz imaging and sensing systems based on the self-mixing effect in terahertz quantum cascade lasers. Two different imaging modalities are used to illustrate the coherent nature of this sensing technique and its applications to three-dimensional surface profiling and material identification.","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117163740","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 : 1900-01-01DOI: 10.4018/978-1-61350-132-0.chcrp
J. Knowles, Patricia Shaw, D. Verhagen, T. Mahoney, P. Samartzis
{"title":"Copyright page","authors":"J. Knowles, Patricia Shaw, D. Verhagen, T. Mahoney, P. Samartzis","doi":"10.4018/978-1-61350-132-0.chcrp","DOIUrl":"https://doi.org/10.4018/978-1-61350-132-0.chcrp","url":null,"abstract":"","PeriodicalId":308672,"journal":{"name":"2013 IEEE 4th International Conference on Photonics (ICP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124185545","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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