Externally-modulated high-power fiber grating ring laser for digital transmission

Abstract

We have constructed a low-cost, double-cavity erbium-doped fiber ring laser with a fiber Bragg grating and a 2 x 2 coupler. A high output power of 8.7 dBm and a signal-to-noise-floor ratio of 43 dB were demonstrated. This fiber grating ring laser is used as the light source for the 2.488 Gb/s transmission experiment through a 100 km single mode fiber. To our knowledge, this is the first time a fiber grating ring laser is being used as an externally modulated source for digital transmission. (C) 1998 Elsevier Science Ltd. All rights reserved.