✦ LIBER ✦

A tunable and reconfigurable microwave photonic filter based on two cascaded modulators and a dispersive medium

✍ Scribed by Hongyan Fu; Haiyan Ou; Kun Zhu; Edvin Remb; Sailing He

Publisher: Elsevier Science
Year: 2008
Tongue: English
Weight: 603 KB
Volume: 281
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2008.08.006

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✦ Synopsis

A novel tunable and reconfigurable microwave photonic filter based on two cascaded modulators and a dispersive medium is proposed, theoretically discussed and experimentally demonstrated. A singlewavelength LD and a modulator (either a Mach-Zehnder modulator or a phase modulator which can avoid the dc bias drift problem) are used to obtain a multi-wavelength optical source. By adjusting the modulation frequency and the bias voltage on the modulators, the wavelength spacing and the relative amplitude of the optical tones change, thus making the filter tunable and reconfigurable. The experimental results show that the proposed filters have good tunability and reconfigurability and the mainlobe-tosidelobe ratio of around 25 dB is achieved.

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