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Proceedings Paper

Linearity compensations for a digital variable optical attenuator
Author(s): Zhonghui Cao; Huiming Yan; Xingkun Wu
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Paper Abstract

A novel digital micro-machined variable optical attenuator (VOA) capable of 40dB dynamic range is described. The device consists of an electromagnetically actuated shutter interposed in a fiber collimator gap and allows adjustment of optical attenuation stepwise in response to inputting TTL pulses. A linear response with respect to driving pulses was achieved by incorporation of a compensation mechanism in the design. Measured performance of the VOA is reported and the characteristics of the device were analyzed with a numerical simulation based on scalar wave theory. The VOA is scalable to a discrete array for the implementation of channel equalization in WDM systems for the realization of high capacity cross-connects.

Paper Details

Date Published: 17 January 2005
PDF: 7 pages
Proc. SPIE 5644, Optoelectronic Devices and Integration, (17 January 2005); doi: 10.1117/12.575777
Show Author Affiliations
Zhonghui Cao, Zhejiang Univ. (China)
Huiming Yan, Zhejiang Univ. (China)
Xingkun Wu, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 5644:
Optoelectronic Devices and Integration
Hai Ming; Xuping Zhang; Maggie Yihong Chen, Editor(s)

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