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- Title
Wideband tunable single bandpass microwave photonic filter based on FWM dynamics of optical-injected DFB laser.
- Authors
Tingting Zhang; Jintian Xiong; Jilin Zheng; Xiangfei Chen; Tao Pu
- Abstract
A wideband tunable single bandpass microwave photonic filter (MPF) based on the four-wave mixing (FWM) nonlinear dynamics of a distributed feedback (DFB) semiconductor laser under optical injection is proposed and experimentally demonstrated. Utilising the wavelength- selective optical gain of the optical-injected DFB laser, phasemodulation to intensity-modulation conversion is obtained, leading to the realisation of a single bandpass MPF. By changing the injection parameters, an MPF with a frequency tuning range of 27.72 GHz has been achieved. The minimum 3 dB bandwidth and the out-of-band suppression ratio are measured to be 61.2 MHz and 25 dB, respectively.
- Subjects
BROADBAND communication systems; DISTRIBUTED feedback lasers; BANDPASS filters; MICROWAVES; SEMICONDUCTOR lasers; BANDWIDTHS
- Publication
Electronics Letters (Wiley-Blackwell), 2016, Vol 52, Issue 1, p57
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2015.1696