Phase regeneration of phase encoded signals by hybrid optical phase squeezer
Phase regeneration of phase encoded signals by hybrid optical phase squeezer
复制标题
通过混合光学相位压缩器进行相位编码信号的相位再生
DOI：
10.1364/oe.22.012177
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发表时间：
2014-05-19
期刊：
影响因子：
3.8
通讯作者：
Namiki, Shu
中科院分区：
文献类型：
--
作者：
Kurosu, Takayuki;Gao, Mingyi;Namiki, Shu
提出了一种对相位编码信号进行相位再生的新方法。在我们所谓的“混合光学相位挤压器（HOPS）”概念中，通过信号的相位共轭副本和信号的相位谐波与移频器的相干加法来合成多电平相位量化信号。与传统的相敏放大方法不同，HOPS不使用任何光学参数增益，因此光相位量化只需要具有低光学非线性的光学元件。在概念验证实验中，证实了2级HOPS可以进行正交压缩，消光比为40 dB。利用基于半导体光放大器的2级hop，成功地实现了两个相干波分复用10.75 gb /s二进制相移键控信号的同步相位再生。(C) 2014年美国光学学会
We present a new method to perform phase regeneration of phase encoded signals. In our concept called "hybrid optical phase squeezer (HOPS)," a multilevel phase-quantized signal is synthesized through the coherent addition of a phase-conjugate copy of the signal and a phase harmonic of the signal with a frequency shifter. Unlike the conventional method by phase sensitive amplification, HOPS does not use any optical parametric gain such that only optical elements with low optical nonlinearity are necessary for optical phase quantization. In the proof-of-concept experiment, it is confirmed that a 2-level HOPS can perform quadrature squeezing with an extinction ratio of 40 dB. Simultaneous phase regeneration of two coherent wavelength-division-multiplexed 10.75-Gb/s binary phase-shift keyed signals is successfully demonstrated using a 2-level HOPS based on a semiconductor optical amplifier. (C) 2014 Optical Society of America