Abstract
A novel wavelength-switching fiber laser source for optically controlled phased-array antenna (OCPAA) is presented for the first time. It can individually scan 25 required wavelengths of the fiber Bragg grating (FBG) array in the OCPAA within 80 ms. The laser source was configured within a unidirectional ring cavity, with a tunable fiber Fabry–Perot filter (FFPF), and two sampled fiber Bragg gratings (SFBG) having a wavelength spacing of 1.6 nm. The average output power of 1.3 mW and the side-mode-suppression ratio of greater than 40 dB for each wavelength were realized. The temporal wavelength-switching characteristics, limited by the relaxation oscillation of the laser and related to the losses and the pump power in the ring cavity, were studied.
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