Simultaneous Prescaled Clock Recovery and Serial-to-Parallel Conversion of Data Signals Using a Polarization Modulator-Based Optoelectronic Oscillator
Simultaneous Prescaled Clock Recovery and Serial-to-Parallel Conversion of Data Signals Using a Polarization Modulator-Based Optoelectronic Oscillator
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DOI：
10.1109/jlt.2009.2025396
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发表时间：
2009-09
影响因子：
4.7
通讯作者：
H. Tsuchida
中科院分区：
文献类型：
--
作者：
H. Tsuchida
本文提出了一种新型的光电振荡器（OEO），它采用偏振调制器（PolM）实现预标度光时钟恢复和光数据信号的1：2串并转换。通过将40 Gb/s归零数据信号沿着注入连续光波，PolM-OEO可同时生成20 GHz时钟和两个20 Gb/s数据流。OEO基于再生分频器的概念，即使在输入信号中没有次谐波音调的情况下，也能确保在20 GHz下稳定的注入锁定操作。PolM-OEO通过与基于交叉相位调制的波长转换器相结合，适用于从开关键控到正交相移键控的全光调制格式转换。
This paper demonstrates a new type of an optoelectronic oscillator (OEO) that employs a polarization modulator (PolM) for realizing prescaled optical clock recovery and 1 : 2 serial-to-parallel conversion of optical data signals. By injecting the 40-Gb/s return-to-zero data signals along with the continuous-wave light, the PolM-OEO generates the 20-GHz clock and two 20-Gb/s data streams simultaneously. The OEO is based on the concept of the regenerative frequency divider, which ensures stable injection-locked operation at 20 GHz even in the absence of subharmonic tones in the input signal. The PolM-OEO is applicable to all-optical modulation format conversion from on-off keying to quadrature phase shift keying by combining it with a cross-phase modulation-based wavelength converter.