DELAYED-SELF-HETERODYNE MEASUREMENT OF LASER FREQUENCY FLUCTUATIONS

被引：21
|
作者：
ISHIDA, O
机构：
[1] NTT Transmission Systems Laboratories, Yokosuka-shi, Kanagawa 238-03
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 1991年 / 9卷 / 11期
关键词：
D O I：
10.1109/50.97642
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：
The two-sample (or Allan) variance of frequency fluctuations is used for laser frequency-noise characterization at Fourier frequencies below 1 MHz. The delayed self-heterodyne technique is employed for the variance measurement; analytical calculations ensure that just twice the variance values are observed at tau < 0.3-tau-d, where tau is the averaging time for the frequency measurement and tau-d is the delay time. The variance measurements of 1.5-mu-m DBR and DFB laser diodes (LD's) are demonstrated at 6.0 x 10(-7) less-than-or-equal-to tau less-than-or-equal-to 1.0 x 10(-4) [s] by using an 81.5-km fiber delay line; observed flicker fluctuations (or 1/f noise) are summarized.
引用
收藏
页码：1528 / 1533
页数：6
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