Pub Date : 2022-11-05DOI: 10.1109/ACP55869.2022.10089005
Jiaxiong Yang, Andong Wang, B. Lu, Mingliang Deng, Xiaojin Guo, Long Zhu
Multiple quasi-ring Airy vortex beams (MQRAVBs) are generated to improve the transmission performance of orbital angular momentum (OAM) free-space optical (FSO) communication. Under turbulence strength D/r0 =3.3 and receiving aperture of 0.03, the received power of MQRAVBs is improved by about 8 dB in the simulation, compared with traditional OAM beams when the cumulative probability is 0.1.
{"title":"Free-Space Turbulence Resistance Transmission with Multiple Quasi-Ring Airy Vortex Beams under Limited Receiving Aperture","authors":"Jiaxiong Yang, Andong Wang, B. Lu, Mingliang Deng, Xiaojin Guo, Long Zhu","doi":"10.1109/ACP55869.2022.10089005","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10089005","url":null,"abstract":"Multiple quasi-ring Airy vortex beams (MQRAVBs) are generated to improve the transmission performance of orbital angular momentum (OAM) free-space optical (FSO) communication. Under turbulence strength D/r0 =3.3 and receiving aperture of 0.03, the received power of MQRAVBs is improved by about 8 dB in the simulation, compared with traditional OAM beams when the cumulative probability is 0.1.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115471359","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088489
Yutian Wang, S. Fu, M. Tang, Jian Kong, Xiahui Tang, Lumin Zhao
We propose and demonstrate the application of the soliton distillation signal processing based on the nonlinear Fourier transform to the vector soliton purification in an ultrafast fiber laser.
提出并演示了基于非线性傅立叶变换的孤子蒸馏信号处理在超快光纤激光器矢量孤子净化中的应用。
{"title":"Vector Soliton Distillation of Laser Pulses Based on Nonlinear Fourier Transform","authors":"Yutian Wang, S. Fu, M. Tang, Jian Kong, Xiahui Tang, Lumin Zhao","doi":"10.1109/ACP55869.2022.10088489","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088489","url":null,"abstract":"We propose and demonstrate the application of the soliton distillation signal processing based on the nonlinear Fourier transform to the vector soliton purification in an ultrafast fiber laser.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115478054","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088668
Yunzhi Xue, Xiaoxuan Wu, Junjia Wang, L. Liu
High-performance photodetector is significant for thin film lithium niobate. In this work, we demonstrate a high-performance black phosphorus photodetector based on a thin film lithium niobate platform. Due to the hybrid waveguide of lithium niobate and BP, the photodetector obtains a high absorption coefficient of 1.58 dB/μm and high responsivity of 7.5 A/W (@optical power of 7.9 μW).
高性能光电探测器对铌酸锂薄膜具有重要意义。在这项工作中，我们展示了一种基于薄膜铌酸锂平台的高性能黑磷光电探测器。由于采用铌酸锂和BP混合波导，光电探测器的吸收系数高达1.58 dB/μm，响应率高达7.5 a /W(@光功率为7.9 μW)。
{"title":"High-Performance Black Phosphorus Photodetector on Thin Film Lithium Niobate","authors":"Yunzhi Xue, Xiaoxuan Wu, Junjia Wang, L. Liu","doi":"10.1109/ACP55869.2022.10088668","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088668","url":null,"abstract":"High-performance photodetector is significant for thin film lithium niobate. In this work, we demonstrate a high-performance black phosphorus photodetector based on a thin film lithium niobate platform. Due to the hybrid waveguide of lithium niobate and BP, the photodetector obtains a high absorption coefficient of 1.58 dB/μm and high responsivity of 7.5 A/W (@optical power of 7.9 μW).","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123074702","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088632
Lei Li, Yupeng Li
Coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems have inferior nonlinear performance due to their high peak to average power ratio (PAPR) characteristics. In this paper we analytically demonstrated the effectiveness of discrete Fourier transform spread (DFT-Spread) method in reducing PAPR and proposed an interpolated subcarrier selective mapping method for PAPR reduction based on DFT spread technology.
{"title":"Investigation of Low-PAPR Coherent-Optical OFDM System Based on DFT-Spread","authors":"Lei Li, Yupeng Li","doi":"10.1109/ACP55869.2022.10088632","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088632","url":null,"abstract":"Coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems have inferior nonlinear performance due to their high peak to average power ratio (PAPR) characteristics. In this paper we analytically demonstrated the effectiveness of discrete Fourier transform spread (DFT-Spread) method in reducing PAPR and proposed an interpolated subcarrier selective mapping method for PAPR reduction based on DFT spread technology.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114647166","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088812
Zhiwei Huang, Zidong Chen, Chongzhuo Zhao, Chuanxin Teng, S. Deng
In this work, a time-to-digital conversion (TDC) circuit based on loop measurement for accuracy improvement is proposed. The structure is based on a coarse counter and two-stage interpolator, using different phase-locked loops (DLLs) to obtain polyphase signals that are insensitive to PVT changes and precise adjustment of the delay in the vernier delay loop to improve conversion linearity Spend. The loop control circuit loops the input signal multiple times and generates a control signal to allow the TDC array to receive the pulse signal in an orderly manner. The realization is to use a small number of TDC channels instead of big TDC arrays to cycle a single time interval at the same position in different reference clock cycles. These clock cycles are then distributed to different channels of the TDC for measurement, and the difference between the channel results of multiple groups of START and STOP are averaged to reduce the impact of clock jitter caused by external random noise for the accuracy improvement of the TDC. The circuit and the chip layout were implemented using a conventional 0.18μm CMOS process and the post-layout simulations were carried out. Simulation results show that with the dynamic range of 1280ns, the TDC achieved a single-shot accuracy of 7.29ps and the total power is about 9.53mW. The peak value of differential nonlinearity (DNL) of the START and STOP interpolators is less than 0.017LSB and the integral nonlinearity (INL) is less than 1.7ps.
{"title":"A Time-to-Digital Converter Based on Looping and Averaging Logic for Accuracy Improvement","authors":"Zhiwei Huang, Zidong Chen, Chongzhuo Zhao, Chuanxin Teng, S. Deng","doi":"10.1109/ACP55869.2022.10088812","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088812","url":null,"abstract":"In this work, a time-to-digital conversion (TDC) circuit based on loop measurement for accuracy improvement is proposed. The structure is based on a coarse counter and two-stage interpolator, using different phase-locked loops (DLLs) to obtain polyphase signals that are insensitive to PVT changes and precise adjustment of the delay in the vernier delay loop to improve conversion linearity Spend. The loop control circuit loops the input signal multiple times and generates a control signal to allow the TDC array to receive the pulse signal in an orderly manner. The realization is to use a small number of TDC channels instead of big TDC arrays to cycle a single time interval at the same position in different reference clock cycles. These clock cycles are then distributed to different channels of the TDC for measurement, and the difference between the channel results of multiple groups of START and STOP are averaged to reduce the impact of clock jitter caused by external random noise for the accuracy improvement of the TDC. The circuit and the chip layout were implemented using a conventional 0.18μm CMOS process and the post-layout simulations were carried out. Simulation results show that with the dynamic range of 1280ns, the TDC achieved a single-shot accuracy of 7.29ps and the total power is about 9.53mW. The peak value of differential nonlinearity (DNL) of the START and STOP interpolators is less than 0.017LSB and the integral nonlinearity (INL) is less than 1.7ps.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116955588","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088905
Haoyu Rui, Wencheng Li, Shulin Jin, H. Pan, Lian Xiang
We have derived a universal expression of the mode coupling coefficient between super-modes in few-mode multicore fiber (FM-MCF). Results show that the inter-super-mode crosstalk (ISMXT) in our theory is consistent with former theories.
{"title":"Theoretical Derivation of Mode Coupling Coefficient for the Crosstalk of Super-modes in Few-mode Multicore Fiber","authors":"Haoyu Rui, Wencheng Li, Shulin Jin, H. Pan, Lian Xiang","doi":"10.1109/ACP55869.2022.10088905","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088905","url":null,"abstract":"We have derived a universal expression of the mode coupling coefficient between super-modes in few-mode multicore fiber (FM-MCF). Results show that the inter-super-mode crosstalk (ISMXT) in our theory is consistent with former theories.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117176838","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088562
Yansheng Bao, Bochen Wang, Zhengyong Li
We establish the photon number resolution (PNR) model and calculate the conversion coefficient which can be used to optimize the voltage grouping of pulse heights corresponding to different photon number states. Then we build a self-consistent PNR detection system based on photon-counting photomultiplier, and directly obtain the photon statistics distribution of 100-MHz pulsed laser at different counting rates. We demonstrate experimentally that our model can be used to acquire more accuracy average photon number, and optimize photon statistics distribution without any calibration of the detector. Our results are valuable to precision measurements such as quantum metrology and quantum radar.
{"title":"Self-consistent Photon Number Resolving Detector System to Optimize Photon Statistics Distribution","authors":"Yansheng Bao, Bochen Wang, Zhengyong Li","doi":"10.1109/ACP55869.2022.10088562","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088562","url":null,"abstract":"We establish the photon number resolution (PNR) model and calculate the conversion coefficient which can be used to optimize the voltage grouping of pulse heights corresponding to different photon number states. Then we build a self-consistent PNR detection system based on photon-counting photomultiplier, and directly obtain the photon statistics distribution of 100-MHz pulsed laser at different counting rates. We demonstrate experimentally that our model can be used to acquire more accuracy average photon number, and optimize photon statistics distribution without any calibration of the detector. Our results are valuable to precision measurements such as quantum metrology and quantum radar.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121014282","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088637
Adrian A. Juarez, Xin Chen, Hao Dong, Ming-Jun Li, Yanjun Zhu, Jianwei Mu
The industry is moving toward higher data rate for dater center campus interconnect, i.e., 800G or higher. Intensity modulation direct detection technology based on 200G/lane has difficulty meeting the distance target of 10 km and hence, coherent transmission technology becomes an alternative to meet the need in this space. O-band coherent transmission is a potential approach for lower-cost and low power consumption for campus interconnect. We study the coherent transmission in O-band using LAN-WDM with one to four wavelengths at 800G/Lane for 10 km link distance. Detailed modelling is conducted to understand the limitations imposed by fiber nonlinearities, laser linewidth and equalization length on the power budget.
{"title":"Numerical Study on Coherent O-Band Transmission for Data Center Campus Interconnects","authors":"Adrian A. Juarez, Xin Chen, Hao Dong, Ming-Jun Li, Yanjun Zhu, Jianwei Mu","doi":"10.1109/ACP55869.2022.10088637","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088637","url":null,"abstract":"The industry is moving toward higher data rate for dater center campus interconnect, i.e., 800G or higher. Intensity modulation direct detection technology based on 200G/lane has difficulty meeting the distance target of 10 km and hence, coherent transmission technology becomes an alternative to meet the need in this space. O-band coherent transmission is a potential approach for lower-cost and low power consumption for campus interconnect. We study the coherent transmission in O-band using LAN-WDM with one to four wavelengths at 800G/Lane for 10 km link distance. Detailed modelling is conducted to understand the limitations imposed by fiber nonlinearities, laser linewidth and equalization length on the power budget.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127157340","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10088691
Lu Han, Yongjun Wang, Chao Li, Xingyuan Huang, Haifeng Yang, J. Liu
In this paper, a data-driven gated recurrent unit network is proposed to recognize initial pulse mode. The network’s training and testing is based on the typical nonlinear dynamic: pulse evolution in high-nonlinear fibers with 1024 m. Well stability performance and high accuracy of 100% are obtained on the testing set.
{"title":"Gated Recurrent Unit Aided Nonlinear Dynamics Analysis in Fiber Optics","authors":"Lu Han, Yongjun Wang, Chao Li, Xingyuan Huang, Haifeng Yang, J. Liu","doi":"10.1109/ACP55869.2022.10088691","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10088691","url":null,"abstract":"In this paper, a data-driven gated recurrent unit network is proposed to recognize initial pulse mode. The network’s training and testing is based on the typical nonlinear dynamic: pulse evolution in high-nonlinear fibers with 1024 m. Well stability performance and high accuracy of 100% are obtained on the testing set.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127254302","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 : 2022-11-05DOI: 10.1109/ACP55869.2022.10089107
Chenxu Fan, Guoqing Pu, Weisheng Hu, L. Yi
Through the combination of the transport-of-intensity equation and a residual network, single-shot characterization of ultrashort pulses from 100 fs to 1.5 ps duration is numerically achieved under a sampling rate of merely 10 GSa/s. Benefiting from the nonlinearity-free physical setup, the measurable pulse energy is as low as 1 fJ.
{"title":"Single-shot Characterization of Femtosecond Pulses by a Residual Network","authors":"Chenxu Fan, Guoqing Pu, Weisheng Hu, L. Yi","doi":"10.1109/ACP55869.2022.10089107","DOIUrl":"https://doi.org/10.1109/ACP55869.2022.10089107","url":null,"abstract":"Through the combination of the transport-of-intensity equation and a residual network, single-shot characterization of ultrashort pulses from 100 fs to 1.5 ps duration is numerically achieved under a sampling rate of merely 10 GSa/s. Benefiting from the nonlinearity-free physical setup, the measurable pulse energy is as low as 1 fJ.","PeriodicalId":427008,"journal":{"name":"2022 Asia Communications and Photonics Conference (ACP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124940950","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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