A beat-frequency tunable dual-mode fiber-Bragg-grating external-cavity laser

被引：8
|
作者：
Wang, W [1 ]
Cada, M
Seregelyi, J
Paquet, S
Mihailov, SJ
Lu, P
机构：
[1] Dalhousie Univ, Halifax, NS B3J 1Z1, Canada
[2] Commun Res Ctr, Ottawa, ON K2H 8S2, Canada
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2005年 / 17卷 / 11期
关键词：
external cavity lasers (ECLs); fiber Bragg gratings (FBGs); microwave photonics and beat signals;
D O I：
10.1109/LPT.2005.858140
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：
A dual-mode external cavity laser employing two spatially separated fiber Bragg gratings has been investigated. We experimentally demonstrated that, without utilizing polarization separation techniques, a closely spaced (similar to 0.3 nm) dual-mode emission can be stabilized if a specific in-phase relation between the external feedbacks and the gain chip facet residual feedback is satisfied at both lasing wavelengths. The radio-frequency (RF) beat signal generated by the dual-mode optical signal had a typical extinction ratio of 25 dB above the noise floor and a 3-dB linewidth of approximately 2 MHz. The RF beat signal had a frequency tuning range of 200 MHz, where the dual-single-mode spectrum can be maintained.
引用
收藏
页码：2436 / 2438
页数：3
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