POWER EQUALIZED WAVELENGTH-SELECTIVE FIBER LASERS USING FIBER BRAGG GRATINGS

A fiber Bragg grating (FBG) based multi-wavelength ring laser is exper imentally investigated in this paper. The lasing wavelengths can be dy namically selected by using a 1 x N optical switch. Micro-bender betwe en FBGs is used as variable attenuator to equalize the output power fo r each lasing wavelength. By using passive multi-ring cavities (MRC) m ethod, single- or dual-wavelength laser of equal output power is demon strated for a signal-to-noise ratio (SNR) of 63 dB and a narrow linewi dth of 3 kHz. (C) 1998 Elsevier Science B.V. All rights reserved.