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Optical Engineering

New type of multimode-interference-type thermo-optic variable optical attenuator
Author(s): Lin Yang; Hongli Xin; Qing Fang; Chunxia Wang; Fang Li; Zhiming Li; Yuliang Liu; Qiming Wang
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Paper Abstract

A thermo-optic variable optical attenuator (VOA) based on a Mach-Zehnder interferometer and multimode-interference coupler is fabricated. Not a single-mode but a multimode waveguide is used as the input and output structures of the optical field, which greatly reduces the coupling loss of the VOA with a normal single-mode fiber. The insertion loss of the fabricated VOA is 2.52 to 2.82 dB at the wavelength of 1520 to 1570 nm. The polarization dependent loss is 0.28 to 0.45 dB at the same wavelength range. Its maximum attenuation range is up to 26.3 dB when its power consumption is 369 mW. The response frequency of the fabricated VOA is about 10 kHz.

Paper Details

Date Published: 1 November 2004
PDF: 2 pages
Opt. Eng. 43(11) doi: 10.1117/1.1804391
Published in: Optical Engineering Volume 43, Issue 11
Show Author Affiliations
Lin Yang, Institute of Semiconductors (China)
Hongli Xin, Institute of Semiconductors (China)
Qing Fang, Institute of Semiconductors (China)
Chunxia Wang, Institute of Semiconductors (China)
Fang Li, Institute of Semiconductors (China)
Zhiming Li, Institute of Semiconductors (China)
Yuliang Liu, Institute of Semiconductors (China)
Qiming Wang, Institute of Semiconductors (China)

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