New type of multimode-interference-type thermo-optic variable optical attenuator

Lin Yang; Hongli Xin; Qing Fang; Chunxia Wang; Fang Li; Zhiming Li; Yuliang Liu; Qiming Wang

doi:10.1117/1.1804391

1 November 2004 New type of multimode-interference-type thermo-optic variable optical attenuator

Lin Yang, Hongli Xin, Qing Fang, Chunxia Wang, Fang Li, Zhiming Li, Yuliang Liu, Qiming Wang

Author Affiliations +

Optical Engineering, Vol. 43, Issue 11, (November 2004). https://doi.org/10.1117/1.1804391

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.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Lin Yang, Hongli Xin, Qing Fang, Chunxia Wang, Fang Li, Zhiming Li, Yuliang Liu, and Qiming Wang "New type of multimode-interference-type thermo-optic variable optical attenuator," Optical Engineering 43(11), (1 November 2004). https://doi.org/10.1117/1.1804391

Published: 1 November 2004

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