Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987118
Shih-Hao Chen, C. Chow
Color-Filter-Free wavelength division multiplexing (WDM) Multiple-input and multiple-output (MIMO) Red-Green-Blue (RGB)-light emitting diode (LED) visible light communication (VLC) system using mobile-phone camera is proposed and demonstrated. Neither color filter nor chromatic color information is required in the proposed receiver (Rx). All image signal processing is based on the grayscale image, which can greatly simplify the WDM MIMO RGB-LED VLC system and save the cost of color splitting process. A proof-of-concept experiment is conducted. Optimized Scale-invariant feature transform (SIFT) algorithm is used to achieve the design.
提出并演示了基于手机摄像头的红绿蓝(RGB)-发光二极管(LED)可见光通信(VLC)系统。在建议的接收器(Rx)中既不需要彩色滤波器也不需要彩色信息。所有图像信号的处理都是基于灰度图像，这可以大大简化WDM MIMO RGB-LED VLC系统，节省分色过程的成本。进行了概念验证实验。采用优化尺度不变特征变换(SIFT)算法实现设计。
{"title":"Color-filter-free WDM MIMO RGB-LED visible light communication system using mobile-phone camera","authors":"Shih-Hao Chen, C. Chow","doi":"10.1109/ICOCN.2014.6987118","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987118","url":null,"abstract":"Color-Filter-Free wavelength division multiplexing (WDM) Multiple-input and multiple-output (MIMO) Red-Green-Blue (RGB)-light emitting diode (LED) visible light communication (VLC) system using mobile-phone camera is proposed and demonstrated. Neither color filter nor chromatic color information is required in the proposed receiver (Rx). All image signal processing is based on the grayscale image, which can greatly simplify the WDM MIMO RGB-LED VLC system and save the cost of color splitting process. A proof-of-concept experiment is conducted. Optimized Scale-invariant feature transform (SIFT) algorithm is used to achieve the design.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"365 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128846070","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}
This paper proposes a novel Routing and Spectrum Assignment (RSA) method in Pbit/s optical switching node: Multipath and Optimal Spectrum Continuity based (MOSC) method for de-fragmentation. This method mitigates spectrum fragmentation occurs in Pbit/s optical switching node of flexible bandwidth optical networks due to dynamic allocation of spectrum resources for new connections. Simulation results show that the novel strategy achieves a better spectral efficiency and a smaller blocking probability with high adaptability to the traffic rate variation.
{"title":"Multipath and optimal spectrum continuity based method for spectrum de-fragmentation in Pbit/s optical switching node of flexible bandwidth optical networks","authors":"Nengxian Li, Lijia Zhang, Bo Liu, Qi Zhang, Yongjun Wang, Qinghua Tian, Xiaoli Yin, X. Xin","doi":"10.1109/ICOCN.2014.6987148","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987148","url":null,"abstract":"This paper proposes a novel Routing and Spectrum Assignment (RSA) method in Pbit/s optical switching node: Multipath and Optimal Spectrum Continuity based (MOSC) method for de-fragmentation. This method mitigates spectrum fragmentation occurs in Pbit/s optical switching node of flexible bandwidth optical networks due to dynamic allocation of spectrum resources for new connections. Simulation results show that the novel strategy achieves a better spectral efficiency and a smaller blocking probability with high adaptability to the traffic rate variation.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126843504","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987069
Nan Hua, Xiaoping Zheng
In this paper, we discuss some of the key problems in future dynamic optical networks, such as multi-domain heterogeneous network inter-communication and all-optical sub-wavelength switching and routing, summarize their current research status, and present the potential solutions.
{"title":"Perspectives and challenges for future dynamic optical networks","authors":"Nan Hua, Xiaoping Zheng","doi":"10.1109/ICOCN.2014.6987069","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987069","url":null,"abstract":"In this paper, we discuss some of the key problems in future dynamic optical networks, such as multi-domain heterogeneous network inter-communication and all-optical sub-wavelength switching and routing, summarize their current research status, and present the potential solutions.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124539742","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987121
D. Huang, A. Lau, T. Cheng, Chao Lu, Shuangyi Yan, Lei Zhou
Burst-mode receiver (BMR) is one of the key components in passive optical networks (PONs). When directly-modulated distribution feedback (DFB) lasers are used as transmitter source, the BMR needs to take additional measures to compensate the effects of the laser frequency chirp. In this paper, we design a coherent optical BMR for a directly-modulated DFB laser source with On-Off Keying (OOK) modulation. We show that by increasing the bandwidth of the low-pass filter (LPF) before analog-to-digital converter (ADC), we can receive signal almost unaffected by frequency chirp and frequency offset. By using coherent detection, we can increase the receiver sensitivity thus enlarge the signal transmission distance.
{"title":"Chirp and frequency offset tolerant coherent burst-mode receiver using directly modulated DFB lasers for coherent PON systems","authors":"D. Huang, A. Lau, T. Cheng, Chao Lu, Shuangyi Yan, Lei Zhou","doi":"10.1109/ICOCN.2014.6987121","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987121","url":null,"abstract":"Burst-mode receiver (BMR) is one of the key components in passive optical networks (PONs). When directly-modulated distribution feedback (DFB) lasers are used as transmitter source, the BMR needs to take additional measures to compensate the effects of the laser frequency chirp. In this paper, we design a coherent optical BMR for a directly-modulated DFB laser source with On-Off Keying (OOK) modulation. We show that by increasing the bandwidth of the low-pass filter (LPF) before analog-to-digital converter (ADC), we can receive signal almost unaffected by frequency chirp and frequency offset. By using coherent detection, we can increase the receiver sensitivity thus enlarge the signal transmission distance.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115832054","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987068
Y. Zou, M. Gao, Shangfei Yang
We investigated the effect of pulse width on pulsed-pump fiber optical parametric amplifiers. To achieve a high parametric gain, there is a trade-off between stimulated Brillouin scattering threshold power and self phase modulation effect.
{"title":"Pusle-width optimization of pulsed-pump fiber optical parametric amplifers","authors":"Y. Zou, M. Gao, Shangfei Yang","doi":"10.1109/ICOCN.2014.6987068","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987068","url":null,"abstract":"We investigated the effect of pulse width on pulsed-pump fiber optical parametric amplifiers. To achieve a high parametric gain, there is a trade-off between stimulated Brillouin scattering threshold power and self phase modulation effect.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133497638","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987137
Ran Zheng, L. Yi, Weixiong Li, H. Nan, Zhenghua Ni, Weisheng Hu
We achieved 51-nm bandwidth noise-like pulse using a polarized graphene saturable absorber made of gold-coated graphene on D-shape fibre. By launching the high energy noise-like pulse into high nonlinear fibre, 1000-nm wide supercontinuum spectrum was obtained.
{"title":"Noise-like pulse generation by gold-coated graphene covered D-shape fibre as both saturable absorber and polarizer","authors":"Ran Zheng, L. Yi, Weixiong Li, H. Nan, Zhenghua Ni, Weisheng Hu","doi":"10.1109/ICOCN.2014.6987137","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987137","url":null,"abstract":"We achieved 51-nm bandwidth noise-like pulse using a polarized graphene saturable absorber made of gold-coated graphene on D-shape fibre. By launching the high energy noise-like pulse into high nonlinear fibre, 1000-nm wide supercontinuum spectrum was obtained.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131907622","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987088
P. Torres-Ferrera, J. Rivas-Moscoso, D. Klonidis, D. Marom, Ioannis Tomkos
A cascade of two-stage coarse and fine WSS is studied for Nyquist- and quasi-Nyquist WDM systems. Results show that edge tributaries experience excess performance degradation, resulting in a transmission distance drop by about a factor of 2 for quasi-Nyquist WDM.
{"title":"Filtering effects of cascaded flex-grid roadms with high spectral resolution filters on the transmission of Nyquist and quasi-Nyquist WDM super-channels","authors":"P. Torres-Ferrera, J. Rivas-Moscoso, D. Klonidis, D. Marom, Ioannis Tomkos","doi":"10.1109/ICOCN.2014.6987088","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987088","url":null,"abstract":"A cascade of two-stage coarse and fine WSS is studied for Nyquist- and quasi-Nyquist WDM systems. Results show that edge tributaries experience excess performance degradation, resulting in a transmission distance drop by about a factor of 2 for quasi-Nyquist WDM.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126606463","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987116
Yuanwei Fan, Jing Chen, Pu Cao, Changyuan Yu
We study the performance of QPSK optical receiver with carrier phase estimation in the presence of N bit resolution ADCs. Two carrier phase estimation schemes, decision-aided maximum likelihood and M-th power, are considered. Bit error rate (BER) of the receiver with phase noise, amplitude noise and ADC quantization noise is theoretically analyzed. Monte-Carlo (MC) simulation results show that 5 bit ADC resolution is sufficient for both phase estimated schemes with less than 0.2 dB SNR penalty compared with the case of infinite ADC resolution. The results are also verified based on latest version of VPItransmissionMaker while less than 0.5 dB OSNR penalty is observed.
{"title":"Performance of carrier phase estimation QPSK optical coherent receiver with N bit resolution ADCS","authors":"Yuanwei Fan, Jing Chen, Pu Cao, Changyuan Yu","doi":"10.1109/ICOCN.2014.6987116","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987116","url":null,"abstract":"We study the performance of QPSK optical receiver with carrier phase estimation in the presence of N bit resolution ADCs. Two carrier phase estimation schemes, decision-aided maximum likelihood and M-th power, are considered. Bit error rate (BER) of the receiver with phase noise, amplitude noise and ADC quantization noise is theoretically analyzed. Monte-Carlo (MC) simulation results show that 5 bit ADC resolution is sufficient for both phase estimated schemes with less than 0.2 dB SNR penalty compared with the case of infinite ADC resolution. The results are also verified based on latest version of VPItransmissionMaker while less than 0.5 dB OSNR penalty is observed.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127112922","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987076
P. Miao, Lenan Wu, Linning Peng
In order to mitigate the nonlinearity of resonant cavity light emitting diode (RCLED) in the step-index polymer optical fiber (SI-POF) communication, polynomial pre-distorter and look-up-table (LUT) pre-distorter are proposed in POF system to compensate the RCLED nonlinearity. Joint optimizations considering biasing current, electrical average signal power and modulation orders are carried out to make good trade-offs with system linearity. With the help of pre-distortion methodologies, 750Mbps compensated discrete multi-tone (DMT) transmissions over 50m SI-POF link are successfully implemented below the bit error rate (BER) of 10-3 and more than 10dB BER performance improvement are achieved. The results illustrate that the proposed pre-distortion schemes are benefiting from higher power efficiency and exhibiting great resistance to nonlinearity, even could be well demodulated in the strong nonlinearity region, which demonstrates the feasibility and validity for RCLED nonlinearity mitigation in POF communication system.
{"title":"RCLED nonlinearity mitigation for polymer optical fiber communications","authors":"P. Miao, Lenan Wu, Linning Peng","doi":"10.1109/ICOCN.2014.6987076","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987076","url":null,"abstract":"In order to mitigate the nonlinearity of resonant cavity light emitting diode (RCLED) in the step-index polymer optical fiber (SI-POF) communication, polynomial pre-distorter and look-up-table (LUT) pre-distorter are proposed in POF system to compensate the RCLED nonlinearity. Joint optimizations considering biasing current, electrical average signal power and modulation orders are carried out to make good trade-offs with system linearity. With the help of pre-distortion methodologies, 750Mbps compensated discrete multi-tone (DMT) transmissions over 50m SI-POF link are successfully implemented below the bit error rate (BER) of 10-3 and more than 10dB BER performance improvement are achieved. The results illustrate that the proposed pre-distortion schemes are benefiting from higher power efficiency and exhibiting great resistance to nonlinearity, even could be well demodulated in the strong nonlinearity region, which demonstrates the feasibility and validity for RCLED nonlinearity mitigation in POF communication system.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114577677","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 : 2014-12-18DOI: 10.1109/ICOCN.2014.6987131
Xiaoli Yin, Can Xu, Ji Hao, Jing-jing Han, X. Xin, Li Li, Chong-xiu Yu
Employing the Zernike Polynomials method, the propagation characteristics of a Laguerre-Gaussian (LG) beam carrying orbital angular momentum (OAM) through the turbulent atmosphere are researched, we establish the random phase screens to emulate atmosphere turbulence according with the Kolmogorov spectrum model and simulate free-space propagation by virtue of the Fresnel diffraction. Intensity and phase distribution, OAM spectrum of LG beam affected by atmosphere turbulence are analyzed. The research results show that the atmosphere turbulence will lead to the spread of topological charge, the variation trend of OAM purity with distance and atmosphere turbulence intensity are obtained by calculations and simulations.
{"title":"Effects of atmosphere turbulence on the purity of light carrying orbital angular momentum employing Zernike Polynomials method","authors":"Xiaoli Yin, Can Xu, Ji Hao, Jing-jing Han, X. Xin, Li Li, Chong-xiu Yu","doi":"10.1109/ICOCN.2014.6987131","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987131","url":null,"abstract":"Employing the Zernike Polynomials method, the propagation characteristics of a Laguerre-Gaussian (LG) beam carrying orbital angular momentum (OAM) through the turbulent atmosphere are researched, we establish the random phase screens to emulate atmosphere turbulence according with the Kolmogorov spectrum model and simulate free-space propagation by virtue of the Fresnel diffraction. Intensity and phase distribution, OAM spectrum of LG beam affected by atmosphere turbulence are analyzed. The research results show that the atmosphere turbulence will lead to the spread of topological charge, the variation trend of OAM purity with distance and atmosphere turbulence intensity are obtained by calculations and simulations.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128257996","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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