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Optical Engineering

Improving suppression ratio of microwave photonic filters using high-precision spectral shaping
Author(s): Yang Yu; Shangyuan Li; Jinxin Liao; Xiaoping Zheng; Hanyi Zhang; Bingkun Zhou
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Paper Abstract

The main-to-sidelobe suppression ratio (MSSR) is significant to filters. The tap weight errors worsen the MSSR of the finite impulse response (FIR) microwave photonic filters (MPFs). The MSSR can be improved by shaping the multicarrier optical source spectra with high precision. By compensating the errors with an iteration method, the sidelobes of the amplitude response can be optimized to increase the MSSR. Such a method is simple, effective, and compatible with all FIR MPF approaches. In the experiment, optical spectra of Gaussian profiles were taken as an example, and an MSSR improvement from 50 to 63 dB was demonstrated.

Paper Details

Date Published: 4 May 2015
PDF: 3 pages
Opt. Eng. 54(5) 050501 doi: 10.1117/1.OE.54.5.050501
Published in: Optical Engineering Volume 54, Issue 5
Show Author Affiliations
Yang Yu, Tsinghua Univ. (China)
Shangyuan Li, Tsinghua Univ. (China)
Jinxin Liao, Tsinghua Univ. (China)
Xiaoping Zheng, Tsinghua Univ. (China)
Hanyi Zhang, Tsinghua Univ. (China)
Bingkun Zhou, Tsinghua Univ. (China)


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