Ultraflat optical frequency comb generated based on cascaded polarization modulators

被引：99

作者：

He, Chao ^{[1
]}

Pan, Shilong ^{[1
]}

Guo, Ronghui ^{[1
]}

Zhao, Yongjiu ^{[1
]}

Pan, Minghai ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Microwave Photon Res Lab, Nanjing 210016, Jiangsu, Peoples R China

来源：

OPTICS LETTERS | 2012年 / 37卷 / 18期

基金：

中国国家自然科学基金;

关键词：

PHASE MODULATORS; INTENSITY; LIGHT;

D O I：

10.1364/OL.37.003834

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel approach to generating an ultraflat and stable optical frequency comb with tunable frequency spacing is proposed and experimentally demonstrated. The proposed generator consists of a polarization modulator (PolM) and a polarizer. The joint operation of a PolM and a polarizer is equivalent to intensity modulation, but with a third controllable parameter in addition to the two controllable parameters in conventional intensity modulation. By tuning the three parameters, an ultraflat optical frequency comb with five comb lines is generated. By cascading the PolM with a second PolM, an ultra-flat optical frequency comb with 25 lines is generated. An experiment using two cascaded PolMs is performed. A 25- line frequency comb with the comb flatness within 1 dB is generated. (c) 2012 Optical Society of America

引用

收藏

页码：3834 / 3836

页数：3

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