Limitation and improvement of collinear beam acousto-optic tunable filters

被引：0

作者：

Chang, I. C. ^{[1
]}

机构：

[1] Accord Opt, Sunnyvale, CA 94087 USA

来源：

2007 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1-6 | 2007年

关键词：

D O I：

10.1109/ULTSYM.2007.210

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Based on the analysis of the theoretical and practical limitations of resolution and sidelobe obtainable by using apodization, a new design of the CBAOTF for WDM is proposed Experimental results of a 65degree apodized CBAOTF measured at 1550nm include 3db bandwidth less than 0.4nm and sidelobe level of -25 dB at 0.8 nm away from the center wavelength. The specified sidelobe level of 35db for the 100 GHz channel spacing can be met by using two apodized CBAOTF in cascade. Other practical limitations include the tight tolerance required in the fabrication and the strong temperature dependent properties of the CBAOTF. A new filter configuration for overcoming these deficiencies is described.

引用

页码：821 / 824

页数：4