40GHz 锁模量子级联激光二极管的谐波和亚谐波同步的实验研究。

Experimental investigation of harmonic and subharmonic synchronization of 40 GHz mode-locked quantum-dash laser diodes.

机构信息

School of Electronic Engineering, Dublin City University, Glasnevin, Dublin 9, Ireland.

出版信息

Opt Lett. 2011 May 1;36(9):1569-71. doi: 10.1364/OL.36.001569.

DOI:10.1364/OL.36.001569

Abstract

Synchronization of a 40 GHz quantum-dash mode-locked (ML) Fabry-Perot laser diode with optically injected pulse streams is experimentally studied. Injected signals consist of nonmodulated and modulated trains of 1.6 ps pulses at various repetition rates, ranging from 10 to 160 GHz and 10 to 160 Gbps, respectively. Subharmonic, fundamental, and harmonic synchronization of the ML laser allows retrieval of stable 40 GHz clock pulses featuring a width of 1.8 ps. Frequency components at 10 and 20 GHz do not create any amplitude modulation on the recovered 40 GHz clock pulses when injecting signals at 10 and 20 GHz/Gbps. In addition, external synchronization of the laser with pulse streams at 80 and 160 GHz/Gbps is sustained despite the absence of significant components at or below 40 GHz.

摘要

我们实验研究了将 40GHz 量子级联锁模（ML）法布里-珀罗激光二极管与光注入脉冲流进行同步。注入信号由非调制和调制的 1.6ps 脉冲序列组成，重复率分别为 10GHz 到 160GHz 和 10Gbps 到 160Gbps。ML 激光的亚谐波、基频和谐波同步允许恢复具有 1.8ps 宽度的稳定的 40GHz 时钟脉冲。当以 10GHz 和 20GHz/Gbps 注入信号时，10GHz 和 20GHz 的频率分量不会对恢复的 40GHz 时钟脉冲产生任何幅度调制。此外，尽管不存在或低于 40GHz 的显著分量，但仍能维持激光与 80GHz 和 160GHz/Gbps 脉冲流的外部同步。