Lu Xintong, Ma Xinyu, Wu Baojian
Key Laboratory of Optical Fiber Sensing and Communication Networks, Ministry of Education, School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
Sensors (Basel). 2024 Oct 2;24(19):6403. doi: 10.3390/s24196403.
An all-optical crosstalk suppression scheme is desirable for wavelength and space division multiplexing optical networks by improving the performance of the corresponding nodes. We put forward a scheme comprising double-stage semiconductor optical amplifiers (SOAs) for wavelength-preserving crosstalk suppression. The wavelength position of the degenerate pump in the optical phase conjugation (OPC) is optimized for signal-to-crosstalk ratio (SXR) improvement. The crosstalk suppression performance of the double-stage SOA scheme for 20 Gb/s quadrature phase shift keying (QPSK) signals is investigated by means of simulations, including the input SXR range and the crosstalk wavelength deviation. For the case with identical-frequency crosstalk, the double-stage SOA scheme can achieve equivalent SXR improvement of 1.5 dB for an input SXR of 10 dB. Thus, the double-stage SOA scheme proposed here is more suitable for few-mode fiber systems and networks.
对于波分复用和空分复用光网络而言，通过改善相应节点的性能，一种全光串扰抑制方案是很有必要的。我们提出了一种包含双级半导体光放大器（SOA）的方案，用于抑制波长保持串扰。优化了光相位共轭（OPC）中简并泵浦的波长位置，以提高信号串扰比（SXR）。通过仿真研究了双级SOA方案对20 Gb/s正交相移键控（QPSK）信号的串扰抑制性能，包括输入SXR范围和串扰波长偏差。对于同频串扰的情况，当输入SXR为10 dB时，双级SOA方案可实现等效SXR改善1.5 dB。因此，这里提出的双级SOA方案更适用于少模光纤系统和网络。
