Semiconductor Lasers for pumping Er³⁺ doped Optical Fiber Amplifiers

Abstract

High power semiconductor lasers, emitting at 1.48 μm or 0.98 μm are strongly required forpumping Er³⁺ doped optical fiber amplifiers used in the optical fiber transmission systems. Inthis paper, we review various semiconductor laser structures developed to achieve high outputpower, good fiber coupling, and high reliability. We also present the recent progress in highpower semiconductor lasers based on the strained-layer quantum well structures, including ournewly developed, 100-mW-output, high power semiconductor laser modules emitting at1.48 μm.