Enhanced Optical Phase Conjugation Technique for Fiber Nonlinearity Mitigation by Two-Stage Optimization

Xiaogang Yi; yi Liu

doi:10.3788/LOP202259.1906001

Laser & Optoelectronics Progress, Volume. 59, Issue 19, 1906001(2022)

Enhanced Optical Phase Conjugation Technique for Fiber Nonlinearity Mitigation by Two-Stage Optimization

Xiaogang Yi^1、* and yi Liu^1,2

Author Affiliations

¹College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

²Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education of China, Taiyuan 030024, Shanxi, China

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Figures & Tables(7)

Fig. 1. Model of two-span dispersion management link. (a) Structure of two-span dispersion management link; (b) NADD; (c) mirror-symmetric NADD; (d) adjustment of conjugate signal power; (e) adjustment of cumulative dispersion

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Fig. 2. Long-distance dispersion management transmission model based on OPC technology

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Fig. 3. Variation of system SNR with conjugate signal power and cumulative dispersion. (a) PO; (b) DO

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Fig. 4. Relationship between system SNR and input power per channel. (a) SLA-IDF link; (b) SSMF-DCF link

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Fig. 5. Maximum SNR of PM-QPSK signal transmitted on SLA-IDF link

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Table 1. Parameters of different fibers

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Table 1. Parameters of different fibers

Fiber type	Attenuation coefficient /（dB·km^-1）	Dispersion coefficient /（ps·nm^-1·km^-1）	Nonlinear coefficient /（W·km^-1）	Dispersion-attenuation coefficient ratio
SLA	0.19	20	0.85	105.3
IDF	0.23	-44	3.08	191.3
SSMF	0.20	17	1.30	85.0
DCF	0.50	-100	5.40	200.0

Table 2. Optimal light intensity and dispersion values of two types of optical fiber links
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Table 2. Optimal light intensity and dispersion values of two types of optical fiber links
Link $X_{A t t}^{o p}$ /dB $X_{C D}^{o p}$ / $X_{C D}^{0}$
SLA‑IDF 3.4 0.7
SSMF‑DCF 2.0 0.7

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Xiaogang Yi, yi Liu. Enhanced Optical Phase Conjugation Technique for Fiber Nonlinearity Mitigation by Two-Stage Optimization[J]. Laser & Optoelectronics Progress, 2022, 59(19): 1906001

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