Tunable photonic microwave notch filter using SOA-based single-longitudinal mode, dual-wavelength laser
- Tunable photonic microwave notch filter using SOA-based single-longitudinal mode, dual-wavelength laser
- 이관일; 이주한; 이상배
- Issue Date
- Optics express
- VOL 17, NO 15, 13216-13221
- Abstract: A novel photonic microwave notch filter with capability of
frequency tuning is proposed and experimentally demonstrated. The scheme
is based on a fiber Bragg grating (FBG)-based, single longitudinal mode,
wavelength-spacing tunable dual-wavelength fiber laser and a dispersive
fiber delay line. By using a symmetrical S-bending technique along the
FBGs, the wavelength spacing of the laser can be tuned, which enables the
microwave notch frequency tuning. Experimental results show that the
notch rejection of more than 30 dB and the flexible tunability of notch
frequency can be readily achieved in the range of 1.2 ~6.7 GHz.
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