[1] LI T, WANG M, ZHANG J, et al. Fiber optical commu- nications theory[M]. Beijing: Tsinghua University Press, 2015: 106-139. (in Chinese)
[2] YU J, CHI N. Optical fiber communication technolo- gies based on digital signal processing (I): single carrier propagation[M]. Beijing: Tsinghua University Press,2020. (in Chinese)
[3] LI X. Research on DSP algorithm and simulation in opti- cal coherent detection[D]. Beijing: Beijing University of Posts and Telecommunications, 2012. (in Chinese)
[4] SPINNLER B. Equalizer design and complexity for digital coherent receivers[J]. IEEE journal of selected topics in quantum electronics, 2010, 16(5): 1180-1192.
[5] SAVORY S J. Digital filters for coherent optical receiv- ers[J]. Optics express, 2008, 16(2): 804-817.
[6] ZHOU X, YU J. Multi-level, multi-dimensional coding for high-speed and high-spectral-efficiency optical transmission[J]. Journal of lightwave technology, 2009, 27(16): 3641-3653.
[7] KUDO R, KOBAYASHI T, ISHIHARA K, et al. Co- herent optical single carrier transmission using overlap frequency domain equalization for long-haul optical systems[J]. Journal of lightwave technology, 2009, 27(16): 3721-3728.
[8] SPINNLER B. Recent advances on polarization multi- plexing[C]//2008 Digest of the IEEE/LEOS Summer Topical Meetings, July 21-23, 2008, Acapulco, Mexico. New York: IEEE, 2008: 10155973.
[9] ARIKAWA M, SATO M, HAYASHI K. Compensation and monitoring of transmitter and receiver impairments in 10 000-km single-mode fiber transmission by adap- tive multi-layer filters with augmented inputs[J]. Optics express, 2022, 30(12): 20333-20359.
[10] ZHANG J, YU J, ZHU B, et al. Transmission of sin- gle-carrier 400G signals (515.2-Gb/s) based on 128.8-GBaud PDM QPSK over 10 130- and 6 078 km terrestrial fiber links[J]. Optics express, 2015, 23(13): 16540-16545.
[11] JAIN A, KRISHNAMURTHY P K, LANDAIS P, et al. EKF for joint mitigation of phase noise, frequency off- set and nonlinearity in 400 Gb/s PM-16-QAM and 200 Gb/s PM-QPSK systems[J]. IEEE photonics journal, 2017, 9(1): 7200110.
[12] QIN H, XIAO X. Influence of the nonlinear propaga- tion effect on the optical signal-to-noise ratio of 400G optical fiber communication systems[J]. Chinese optics letters, 2017, 15(3): 030604.
[13] ASIF R, LIN C Y, SCHMAUSS B. Efficient compensa-tion of chromatic dispersion and nonlinearities using logarithmic digital backward propagation in N-channel DWDM 1.12Tbit/s DP-QPSK transmission[J]. Journal of modern optics, 2012, 59(2): 95-101.
[14] MOHAMMED S H, ABASS A K, ALI M H, et al. De- sign and simulation of secure fiber optic communication system utilizing hill cipher algorithm[J]. Journal of op- tics, 2023.
[15] AL NOOR M, VIRDEE B S, QUAZZANE K, et al. 5G mobile wireless access and digital channeling with RF over fiber for long-haul 64-QAM communication[J]. IETE journal of research, 2023.
[16] MA F, MA Y, LI P, et al. Inverse design of broadband dispersion compensation fiber based on deep learning and differential evolution algorithm[J]. IEEE photonics journal, 2023, 15(3): 7201307.
[17] GUL B, AHMAD F. Review of FBG and DCF as dis- persion management unit for long haul optical links and WDM systems[J]. Optical and quantum electronics, 2023, 55(6): 557.
[18] LIU Z, WEN J, ZHOU Z, et al. A highly birefringent photonic crystal fiber with three rows of circular air holes[J]. Photonics, 2023, 10(5): 527.
[19] ABDULLA E N, HUSSIEN R A, RASHID F F, et al. Design and performance analysis of symmetrical 160 Gbps TWDM-PON utilizing bidirectional configura- tion[J]. Journal of optics, 2023.
[20] KARAR A, EL FALOU A, BARAKAT J, et al. Recent advances in coherent optical communications for short-reach: phase retrieval methods[J]. Photonics, 2023, 10(3): 308.
[21] IP E, KAHN J M. Digital equalization of chromatic dispersion and polarization mode dispersion[J]. Journal of lightwave technology, 2007, 25(8): 2033-2043.
[22] XU T, JACOBSEN G, POPOV S, et al. Chromatic dis- persion compensation in coherent transmission system using digital filters[J]. Optics express, 2010, 18(15): 16243-16257.
