Pub Date : 2020-05-01DOI: 10.1109/ICP46580.2020.9206474
Ridzuan Md. Noh, M. Mokhtar, Z. Zan, Mohd Rashidi Che Beson
This paper discusses the performance of Multiservice Optical Code Division Multiple Access (MS-OCDMA) in the Visible Light Communication (VLC). There are several issues in using some Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) codes such as long code weightage (which limits the bandwidth) as well as the issue of code inflexibility of code weight structure (which led to less feasible system). The application of MS-code in VLC was investigated due to its shorter code length as well as its flexibility on various numbers of basic users without changing the code weight. The system was observed using the Optisys 7.0. software. Results taken from this system was collected and compared with the other codes from OCDMA such as Khazani Syed code (KS-code) and Modified Quadratic Congruence code (MQC-code). All codes were compared at bit error rate (BER) of 10−9 where the system could support video transmission. The results showed that MS-code can support up to 5m, 0.8m longer than KS-code at bit error rate of 10−9 while MQC can only support BER of 10−8 at back-to-back performance.
{"title":"Performance of MS-code of OCDMA over VLC System","authors":"Ridzuan Md. Noh, M. Mokhtar, Z. Zan, Mohd Rashidi Che Beson","doi":"10.1109/ICP46580.2020.9206474","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206474","url":null,"abstract":"This paper discusses the performance of Multiservice Optical Code Division Multiple Access (MS-OCDMA) in the Visible Light Communication (VLC). There are several issues in using some Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) codes such as long code weightage (which limits the bandwidth) as well as the issue of code inflexibility of code weight structure (which led to less feasible system). The application of MS-code in VLC was investigated due to its shorter code length as well as its flexibility on various numbers of basic users without changing the code weight. The system was observed using the Optisys 7.0. software. Results taken from this system was collected and compared with the other codes from OCDMA such as Khazani Syed code (KS-code) and Modified Quadratic Congruence code (MQC-code). All codes were compared at bit error rate (BER) of 10−9 where the system could support video transmission. The results showed that MS-code can support up to 5m, 0.8m longer than KS-code at bit error rate of 10−9 while MQC can only support BER of 10−8 at back-to-back performance.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"116 1","pages":"58-59"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80785670","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 : 2020-05-01DOI: 10.1109/ICP46580.2020.9206481
A. Alwahib, Y. M. Kamil, M. A. Bakar, M. Mahdi, F. H. Suhailin
We review our recent finding on the development of surface plasmon resonance sensors for lead ion detection in aqueous solution. Both Kretschmann and optical fiber configurations were utilized to investigate the angular and spectral responses of plasmonic wave at different concentrations of lead ion.
{"title":"Optical Detection of Lead Ion with Surface Plasmon Resonance Configurations","authors":"A. Alwahib, Y. M. Kamil, M. A. Bakar, M. Mahdi, F. H. Suhailin","doi":"10.1109/ICP46580.2020.9206481","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206481","url":null,"abstract":"We review our recent finding on the development of surface plasmon resonance sensors for lead ion detection in aqueous solution. Both Kretschmann and optical fiber configurations were utilized to investigate the angular and spectral responses of plasmonic wave at different concentrations of lead ion.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"24 1","pages":"9-10"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78174800","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 : 2020-05-01DOI: 10.1109/ICP46580.2020.9206505
T. H. Dahawi, Y. M. Raji, Z. Yusoff, R. Q. Shaddad, M. S. Salleh, J. Senior
A low cost fibre-wireless (FiWi) convergent network architecture including two multiple-input multiple-output (MIMO) wireless signals based on a 5G universal filter multicarrier (UFMC) waveform and wired signal over orthogonal frequency division multiplexed passive optical network (OFDM-PON) is presented. The proposed scheme utilizes a single side band frequency translation (SSB-FT) technique to provide a smooth and cost-efficient convergent system. A proof-of-concept downstream link over a 20 km standard-PON is conducted by simulation to confirm the successful transmission of 1 Gb/s data rate for each MIMO and 2.5 Gb/s for the wired signal using error vector magnitude (EVM) and bit error rate (BER) measurements.
{"title":"Low-Cost Integration of MIMO-RoF based on 5G UFMC Waveform and Wired OFDM Signal over PON","authors":"T. H. Dahawi, Y. M. Raji, Z. Yusoff, R. Q. Shaddad, M. S. Salleh, J. Senior","doi":"10.1109/ICP46580.2020.9206505","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206505","url":null,"abstract":"A low cost fibre-wireless (FiWi) convergent network architecture including two multiple-input multiple-output (MIMO) wireless signals based on a 5G universal filter multicarrier (UFMC) waveform and wired signal over orthogonal frequency division multiplexed passive optical network (OFDM-PON) is presented. The proposed scheme utilizes a single side band frequency translation (SSB-FT) technique to provide a smooth and cost-efficient convergent system. A proof-of-concept downstream link over a 20 km standard-PON is conducted by simulation to confirm the successful transmission of 1 Gb/s data rate for each MIMO and 2.5 Gb/s for the wired signal using error vector magnitude (EVM) and bit error rate (BER) measurements.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"33 1","pages":"26-27"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74590070","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 : 2020-05-01DOI: 10.1109/ICP46580.2020.9206492
Mohd Saiful Dzulkefly Zan, M. Mokhtar, M. Elgaud, A. Bakar, N. Arsad, M. Mahdi
We propose a novel technique to deploy Golay code in our previously reported differential cross-spectrum BOTDR (DCS-BOTDR) fiber sensor technique to improve the Brillouin frequency shift (BFS) resolution measurement. The conventional DCS-BOTDR uses two pulsed probes having slightly different in pulse duration; the duration difference between the pulses enables sub-meter spatial resolution. In the new coded DCS-BOTDR, the narrow pulse was modulated with Golay code via intensity modulation scheme to achieve higher BFS resolution and at the same time attain sub-meter spatial resolution. By using 8 bits of Golay code in the proof-of-concept experiment, we have achieved 40 cm spatial resolution and 3.47 MHz Brillouin frequency accuracy in measuring a 1280 m fiber.
{"title":"Pulse Coding Technique in Differential Cross-Spectrum BOTDR for Improving the Brillouin Frequency Accuracy and Spatial Resolution","authors":"Mohd Saiful Dzulkefly Zan, M. Mokhtar, M. Elgaud, A. Bakar, N. Arsad, M. Mahdi","doi":"10.1109/ICP46580.2020.9206492","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206492","url":null,"abstract":"We propose a novel technique to deploy Golay code in our previously reported differential cross-spectrum BOTDR (DCS-BOTDR) fiber sensor technique to improve the Brillouin frequency shift (BFS) resolution measurement. The conventional DCS-BOTDR uses two pulsed probes having slightly different in pulse duration; the duration difference between the pulses enables sub-meter spatial resolution. In the new coded DCS-BOTDR, the narrow pulse was modulated with Golay code via intensity modulation scheme to achieve higher BFS resolution and at the same time attain sub-meter spatial resolution. By using 8 bits of Golay code in the proof-of-concept experiment, we have achieved 40 cm spatial resolution and 3.47 MHz Brillouin frequency accuracy in measuring a 1280 m fiber.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"4 1","pages":"11-12"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81799742","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 : 2020-05-01DOI: 10.1109/ICP46580.2020.9206473
M. Jaafar, M. Othman, H. Haroon, M. Yaacob, M. A. Ilyas, S. N. Zainurin, N. S. Ahmad
The performance of a surface plasmon resonance (SPR) sensor including the excitation wavelength, gold film thickness and refractive indices of prism was studied theoretically. The narrowness and depth of the SPR curve were observed to improve the sensitivity of SPR sensor. The simulation results indicate that these parameters can be varied to produce a better performance of SPR sensor at an accuracy of more than 95%. This work is an important step to obtain the optimization of experimental parameters in order to design a high performance of SPR based sensing devices.
{"title":"A Simulation of Prism-based Surface Plasmon Resonance Liquid Sensing Device","authors":"M. Jaafar, M. Othman, H. Haroon, M. Yaacob, M. A. Ilyas, S. N. Zainurin, N. S. Ahmad","doi":"10.1109/ICP46580.2020.9206473","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206473","url":null,"abstract":"The performance of a surface plasmon resonance (SPR) sensor including the excitation wavelength, gold film thickness and refractive indices of prism was studied theoretically. The narrowness and depth of the SPR curve were observed to improve the sensitivity of SPR sensor. The simulation results indicate that these parameters can be varied to produce a better performance of SPR sensor at an accuracy of more than 95%. This work is an important step to obtain the optimization of experimental parameters in order to design a high performance of SPR based sensing devices.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"40 1","pages":"36-37"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85078862","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 : 2020-05-01DOI: 10.1109/ICP46580.2020.9206467
N. B. Affendy, N. A. Ngasri, Nadiah Husseini Zainol Abidin, F. D. Muhammad, M. H. Abu Bakar
Although single-mode tapered optical fiber (SMTF) sensors have shown excellent performance, it is dependent on spectral analysis which typically involves costly and bulky equipment. The main focus of this work was the integration of SMTF into linear cavity fiber laser to simplify the sensing output. The optimum dimension of the tapered optical fiber used was 5mm transition length, waist length of 10mm and waist diameter of $12mu mathrm{m}$, which was able to produce a single lasing wavelength with suppressed side modes. Linear shifts to the laser with R2 value of 0.970 was observed as the sensor was introduced to increment in the NaCl concentration from 0 to $10mu mathrm{M}$. The integrated SMTF yielded a sensitivity of $0.455mathrm{nm}1mu mathrm{M}$. This work has demonstrated the simplification of the sensing output which makes it more feasible for optoelectronic integration and eventually produce a handy, simple, and cost-effective tapered optical fiber sensor system in future.
{"title":"Linear Cavity Fiber Laser Intracavity Refractive Index Sensor","authors":"N. B. Affendy, N. A. Ngasri, Nadiah Husseini Zainol Abidin, F. D. Muhammad, M. H. Abu Bakar","doi":"10.1109/ICP46580.2020.9206467","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206467","url":null,"abstract":"Although single-mode tapered optical fiber (SMTF) sensors have shown excellent performance, it is dependent on spectral analysis which typically involves costly and bulky equipment. The main focus of this work was the integration of SMTF into linear cavity fiber laser to simplify the sensing output. The optimum dimension of the tapered optical fiber used was 5mm transition length, waist length of 10mm and waist diameter of $12mu mathrm{m}$, which was able to produce a single lasing wavelength with suppressed side modes. Linear shifts to the laser with R2 value of 0.970 was observed as the sensor was introduced to increment in the NaCl concentration from 0 to $10mu mathrm{M}$. The integrated SMTF yielded a sensitivity of $0.455mathrm{nm}1mu mathrm{M}$. This work has demonstrated the simplification of the sensing output which makes it more feasible for optoelectronic integration and eventually produce a handy, simple, and cost-effective tapered optical fiber sensor system in future.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"49 1","pages":"95-96"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83648002","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 : 2020-05-01DOI: 10.1109/ICP46580.2020.9206475
W. Maryam, D. Chugh, J. Dawes, H. Tan
Random lasing properties were investigated with and without hexagonal boron nitride using rhodamine 6G doped film as the gain medium. Aluminum nitride nanocolumns as scatterers were introduced on top of the hBN layer. A lower threshold of 1.38 mJ/cm2 was achieved in samples containing hBN. Significantly higher threshold was observed when no hBN was present. Results suggest the potential of utilising hBN as an ultrathin flexible substrate for random lasing applications.
{"title":"Hexagonal Boron Nitride as a Flexible Random Laser","authors":"W. Maryam, D. Chugh, J. Dawes, H. Tan","doi":"10.1109/ICP46580.2020.9206475","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206475","url":null,"abstract":"Random lasing properties were investigated with and without hexagonal boron nitride using rhodamine 6G doped film as the gain medium. Aluminum nitride nanocolumns as scatterers were introduced on top of the hBN layer. A lower threshold of 1.38 mJ/cm2 was achieved in samples containing hBN. Significantly higher threshold was observed when no hBN was present. Results suggest the potential of utilising hBN as an ultrathin flexible substrate for random lasing applications.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"24 1","pages":"109-110"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78143687","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 : 2020-05-01DOI: 10.1109/ICP46580.2020.9206458
S. Dinodiya, B. Suthar, A. Bhargava
Nonlinear multilayer structure with a defect layer can be used in optical sensing by exploiting third order Kerr nonlinearity. In the present work, photonic crystal of multilayer structure as $(mathrm{AB})3^{3}mathrm{D})(mathrm{BA})^{3}$ is considered to study the effect of intensity of light on transmission properties. SiN medium is used as higher refractive index as well as the defect layer with different thickness. As a defect layer it produces a defect mode inside photonic band gap region of transmission spectra. SiN material is used as Kerr nonlinear material whose refractive index depends upon intensity of light, therefore this defect mode is shifted due to the changes in refractive index of SiN induced by intensity. Theoretical simulation is obtained by transfer matrix method. Proposed structure can be used as optical sensor to detect the intensity of light in units of TW/cm2.
{"title":"One Dimensional SiN/Air Defect Multilayer based Nonlinear Optical Sensor","authors":"S. Dinodiya, B. Suthar, A. Bhargava","doi":"10.1109/ICP46580.2020.9206458","DOIUrl":"https://doi.org/10.1109/ICP46580.2020.9206458","url":null,"abstract":"Nonlinear multilayer structure with a defect layer can be used in optical sensing by exploiting third order Kerr nonlinearity. In the present work, photonic crystal of multilayer structure as $(mathrm{AB})3^{3}mathrm{D})(mathrm{BA})^{3}$ is considered to study the effect of intensity of light on transmission properties. SiN medium is used as higher refractive index as well as the defect layer with different thickness. As a defect layer it produces a defect mode inside photonic band gap region of transmission spectra. SiN material is used as Kerr nonlinear material whose refractive index depends upon intensity of light, therefore this defect mode is shifted due to the changes in refractive index of SiN induced by intensity. Theoretical simulation is obtained by transfer matrix method. Proposed structure can be used as optical sensor to detect the intensity of light in units of TW/cm2.","PeriodicalId":6758,"journal":{"name":"2020 IEEE 8th International Conference on Photonics (ICP)","volume":"33 1","pages":"115-116"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81779425","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：