Cascaded acousto-optical system for the modulation of unpolarized light

被引：16

作者：

Kastelik, Jean-Claude ^{[1
,2
,3
]}

Yushkov, Konstantin B. ^{[4
]}

Dupont, Samuel ^{[1
,2
,3
]}

Voloshinov, Vitaly B. ^{[4
]}

机构：

[1] Univ Lille Nord France, F-59000 Lille, France

[2] UVHC, IEMN DOAE, F-59313 Valenciennes, France

[3] CNRS, UMR 8520, F-59650 Villeneuve Dascq, France

[4] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 15期

关键词：

PARATELLURITE; DEVICES;

D O I：

10.1364/OE.17.012767

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A cascaded system of two acousto-optical cells is proposed for equalization of multichannel optical signal satisfying coarse wavelength-division multiplexing standard. Two similar acousto-optical modulators for unpolarized light on the basis of 10 degrees-cut paratellurite crystals were used in a free-space gap of a fiber line. The system controlled intensity of several optical carriers in the spectral range from 1200 to 1700 nm. The device was tested in a four-channel regime of operation in the range 1510-1570 nm. Overall optical insertion losses did not exceed -2 dB and less than 1 W electric power per channel was necessary for -20 dB intensity attenuation of the signal in a continuous operation mode. Compensation for birefringence in paratellurite provided diffraction regime that was insensitive to polarization of light. Interchannel crosstalk was less than -10 dB. (C) 2009 Optical Society of America

引用

页码：12767 / 12776

页数：10

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