利用垂直腔表面发射激光器注入锁定实现上变频

李知峰; 王红杰; 王文睿; 王菊; 安超; 黑克非; 吴穹; 于晋龙; 杨恩泽

doi:doi:10.3788/aos201434.0206001

光学学报, 2014, 34 (2): 0206001, 网络出版: 2014-01-23

利用垂直腔表面发射激光器注入锁定实现上变频

Upconversion by Vertical Cavity Surface Emitting Laser Injection Locking

论文大纲

李知峰 ^*王红杰王文睿王菊安超黑克非吴穹于晋龙杨恩泽

作者单位

天津大学电子信息工程学院, 天津 300072

光通信全光上变频注入锁定垂直腔表面发射激光器 optical communications all-optical frequency upconvesion injection locking vertical cavity surface emitting laser

摘要

提出了一种基于垂直腔表面发射激光器（VCSEL）的无本振光子微波上变频方案。该方案将相对低速的伪随机基带信号注入VCSEL中，利用注入信号的高次谐波注入锁定VCSEL。被锁定激光器波长与原注入光信号在谐振腔中相干差拍，产生上变频调幅微波信号。实验中利用2.5 Gb/s非归零码强度调制信号注入锁定VCSEL，无需本振，实现了载波频率为14.3 GHz的光子微波上变频，10 kHz偏移处载波相位噪声达-81 dBc/Hz。通过调节注入光信号的波长和功率，进一步实现载波频率在7.5~23 GHz之间的调谐，验证了该方案的可行性，并对系统性能进行了误码分析，系统代价为1.4 dB。结果证明该方案无需微波本振，仅需采用价格低廉的VCSEL即可实现光子微波上变频，从而为无线光混合接入网中光子微波信号产生技术提供了一种低成本的解决思路。

Abstract

A microwave photon upconversion scheme based on a vertical cavity surface emitting laser (VCSEL) without local oscillator is proposed. The relatively low pseudo-random baseband signal is injected into the VCSEL, and the higher harmonics of the injected signal is used to lock the VCSEL. The injection-locked laser wavelength beats coherently with the original optical signal in the cavity which generates the upconverting amplitude modulated microwave signal. In the experiment, 2.5 Gb/s nonreturn-to-zero code intensity modulated signal is used to inject-lock the VCSEL, which achieves a carrier frequency of 14.3 GHz microwave photon upconversion without local oscillator, and the carrier phase noise is -81 dBc/Hz at 10 kHz frequency deviation. Furthermore, modulation of 7.5~23 GHz carrier frequency can be achieved by adjusting the wavelength and power of injection signal, and the feasibility of the scheme is verified. The bit error rate performance of the system is analyzed, and system consideration is 1.4 dB. The result shows that the upconversion signal can be achieved by only using the inexpensive VCSEL without microwave local oscillator, which provides a low cost solution idea for the wireless-optical hybrid access network photon microwave signal generation technique.

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李知峰, 王红杰, 王文睿, 王菊, 安超, 黑克非, 吴穹, 于晋龙, 杨恩泽. 利用垂直腔表面发射激光器注入锁定实现上变频[J]. 光学学报, 2014, 34(2): 0206001. Li Zhifeng, Wang Hongjie, Wang Wenrui, Wang Ju, An Chao, Hei Kefei, Wu Qiong, Yu Jinlong, Yang Enze. Upconversion by Vertical Cavity Surface Emitting Laser Injection Locking[J]. Acta Optica Sinica, 2014, 34(2): 0206001.

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