Effect of injection current and temperature on signal strength in a laser diode optical feedback interferometer

被引：17

作者：

Al Roumy, Jalal ^{[1
,2
]}

Perchoux, Julien ^{[1
,2
]}

Lim, Yah Leng ^{[3
]}

Taimre, Thomas ^{[4
]}

Rakic, Aleksandar D. ^{[3
]}

Bosch, Thierry ^{[1
,2
]}

机构：

[1] CNRS, LAAS, F-31077 Toulouse 4, France

[2] Univ Toulouse, INP, LAAS, F-31400 Toulouse, France

[3] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia

[4] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

来源：

APPLIED OPTICS | 2015年 / 54卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

NOISE;

D O I：

10.1364/AO.54.000312

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple analytical model that describes the injection current and temperature dependence of optical feedback interferometry signal strength for a single-mode laser diode. The model is derived from the Lang and Kobayashi rate equations, and is developed both for signals acquired from the monitoring photodiode (proportional to the variations in optical power) and for those obtained by amplification of the corresponding variations in laser voltage. The model shows that both the photodiode and the voltage signal strengths are dependent on the laser slope efficiency, which itself is a function of the injection current and the temperature. Moreover, the model predicts that the photodiode and voltage signal strengths depend differently on injection current and temperature. This important model prediction was proven experimentally for a near-infrared distributed feedback laser by measuring both types of signals over a wide range of injection currents and temperatures. Therefore, this simple model provides important insight into the radically different biasing strategies required to achieve optimal sensor sensitivity for both interferometric signal acquisition schemes. (C) 2015 Optical Society of America

引用

页码：312 / 318

页数：7

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