A high-Q microwave photonic filter by using an SOA-based active mode-locked fiber ring laser

Abstract

A high-Q microwave photonic filter using a semiconductor optical amplifier (SOA)-based mode-locking fiber ring laser is proposed, analyzed and experimentally demonstrated. The proposed microwave photonic filter can realize a high-Q frequency response, it is compact without an optical source, and it can be easily tuned by adjusting an optical variable delay line in a ring cavity. A result with a Q-factor of about 236 and a rejection ratio of about 45 dB is obtained. The measured results and the theoretical estimations agree very well.

Keywords

Semiconductor Optical Amplifier / Free Spectral Range / Vector Network Analyzer / Rejection Ratio / Optical Source

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