Generation and stabilization of ultrafast optical pulse trains with monolithic mode-locked laser diodes

被引:10
作者
Arahira, S [1 ]
Katoh, Y [1 ]
Ogawa, Y [1 ]
机构
[1] Oki Elect Ind Co Ltd, Opt Components Co, Tokyo 1938550, Japan
关键词
mode-locked laser diode; OTDM; repetition-frequency multiplication; timing jitter reduction; ultrafast pulse generation;
D O I
10.1023/A:1017503013202
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, we report on the generation and the stabilization of ultrafast optical pulse trains exceeding 100 GHz from monolithic mode-locked laser diodes (MLLDs) combined with some new techniques such as subharmonic synchronous mode-locking (SSML) and repetition-frequency multiplication (RFM) method. Key subjects to increase the pulse repetition frequencies of the MLLDs such as fast absorption recovery and harmonic mode-locking operation are discussed. 500 GHz optical pulse generation from a short-cavity, graded-index separated confinement heterostructure MLLD and THz-rate pulse generation by harmonic mode-locking are reported. We also demonstrate the stabilization of a 160 GHz MLLD by the SSML with subharmonic-frequency optical pulse injection and reveal that the SSML is very promising as a stabilization technique of the ultrafast MLLD beyond the limitations by the electronic device speed. A method to accurately measure the timing jitter of such ultrafast optical pulse train, all-optical down converting using a nonlinear optical device, is also presented. We also mention another choice for ultrafast optical pulse generation using the MLLD combined with a dispersive medium such as an optical fiber. We demonstrate here the generations of stable 84-256 GHz optical pulse trains by the RFM method of the MLLD stabilized by the SSML.
引用
收藏
页码:691 / 707
页数:17
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