Diffractive optical element for coupling semiconductor laser diode to single-mode fiber

被引：0

作者：

Lu, S ^{[1
]}

Yan, YB ^{[1
]}

Jin, GF ^{[1
]}

Wu, MX ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Precis Instruments, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

来源：

INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES VII | 2003年 / 4987卷

关键词：

diffractive optical element (DOE); optical coupling; optical fiber; laser diode (LD);

D O I：

10.1117/12.474353

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An integrated scheme is proposed for low-loss coupling between a semiconductor laser diode (LD) and a single mode fiber (SMF) by using,a diffractive optical element,(DOE). The DOE is designed based on diffractive optics principle, which phase distribution is optimization result of iterative phase retrieval algorithm. A new far-field amplitude constraint is introduced into the iteration to provide very high mode conversion quality. The scheme is, applicable to realize high:efficient coupling-to SMF for any semiconductor LD. Coupling losses lower than 0.02dB have been reached for all the discussed LDs with aspect ratios of the elliptical fields from 1 to 9. The requirements on axial displacement and rotation angle have been removed. The tolerance for 1-dB loss increment for lateral misalignment is 0.9mum. And the coupling loss is insensitive to tilt angle.

引用

页码：240 / 247

页数：8

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