Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring
A fast, accurate automatic bias control (ABC) scheme with low disturbance for optical IQ modulators is proposed by using the dither-vector-mapping monitoring (DVMM) technique. The proposed scheme solely necessitates vector length calculation via addition and subtraction operations and obviates the n...
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| Language: | English |
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2025-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10882879/ |
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| author | Hongyu Li Xinghan Li Mengfan Cheng Qi Yang Ming Tang Deming Liu Lei Deng |
| author_facet | Hongyu Li Xinghan Li Mengfan Cheng Qi Yang Ming Tang Deming Liu Lei Deng |
| author_sort | Hongyu Li |
| collection | DOAJ |
| description | A fast, accurate automatic bias control (ABC) scheme with low disturbance for optical IQ modulators is proposed by using the dither-vector-mapping monitoring (DVMM) technique. The proposed scheme solely necessitates vector length calculation via addition and subtraction operations and obviates the necessity of employing a direct digital synthesis (DDS) module, in contrast to conventional ABC schemes. By this means, the proposed scheme demonstrates reduced algorithmic complexity and a faster convergence rate, requiring only 0.3∼0.5 s to track and lock from a random bias point to a linear bias point, about 30 times faster than current commercial products. Moreover, unlike the commonly used single-tone dither signal (STDS), the PRBS-based dither signal in this scheme is broadband and has lower power spectral density and peak power at the same power level. Therefore, it not only induces lower nonlinear distortion in the transmitted signal but also has strong noise resistance, contributing to good control accuracy and robustness. The performance of DVMM-based ABC and STDS-based ABC is evaluated in 40/20 Gbaud 16/64 QAM coherent optical transmission systems, showing that DVMM can effectively reduce the bit error rate (BER) and has superior transmission performance. |
| format | Article |
| id | doaj-art-e65c45c7d9854aaba16b09d3d5b8e95a |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-e65c45c7d9854aaba16b09d3d5b8e95a2025-08-20T03:15:47ZengIEEEIEEE Photonics Journal1943-06552025-01-011721510.1109/JPHOT.2025.354083910882879Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping MonitoringHongyu Li0Xinghan Li1Mengfan Cheng2https://orcid.org/0000-0002-8221-0612Qi Yang3https://orcid.org/0000-0001-9017-6971Ming Tang4https://orcid.org/0000-0001-8669-4186Deming Liu5https://orcid.org/0000-0001-5591-2929Lei Deng6https://orcid.org/0000-0003-2647-4610Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, ChinaA fast, accurate automatic bias control (ABC) scheme with low disturbance for optical IQ modulators is proposed by using the dither-vector-mapping monitoring (DVMM) technique. The proposed scheme solely necessitates vector length calculation via addition and subtraction operations and obviates the necessity of employing a direct digital synthesis (DDS) module, in contrast to conventional ABC schemes. By this means, the proposed scheme demonstrates reduced algorithmic complexity and a faster convergence rate, requiring only 0.3∼0.5 s to track and lock from a random bias point to a linear bias point, about 30 times faster than current commercial products. Moreover, unlike the commonly used single-tone dither signal (STDS), the PRBS-based dither signal in this scheme is broadband and has lower power spectral density and peak power at the same power level. Therefore, it not only induces lower nonlinear distortion in the transmitted signal but also has strong noise resistance, contributing to good control accuracy and robustness. The performance of DVMM-based ABC and STDS-based ABC is evaluated in 40/20 Gbaud 16/64 QAM coherent optical transmission systems, showing that DVMM can effectively reduce the bit error rate (BER) and has superior transmission performance.https://ieeexplore.ieee.org/document/10882879/Bias controlIQ modulatorfastlow disturbanceDVMM |
| spellingShingle | Hongyu Li Xinghan Li Mengfan Cheng Qi Yang Ming Tang Deming Liu Lei Deng Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring IEEE Photonics Journal Bias control IQ modulator fast low disturbance DVMM |
| title | Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring |
| title_full | Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring |
| title_fullStr | Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring |
| title_full_unstemmed | Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring |
| title_short | Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring |
| title_sort | fast accurate and low disturbance automatic bias control for coherent optical transmitter using dither vector mapping monitoring |
| topic | Bias control IQ modulator fast low disturbance DVMM |
| url | https://ieeexplore.ieee.org/document/10882879/ |
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