High Power 980 nm Ridge Waveguide Laser in Single Mode Fiber Coupled Package,
EG AND G CANADA LTD VAUDREUIL (QUEBEC) OPTOELECTRONICS DIV
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Rapid progress in strained quantum well InGaAsAlGaAs laser diodes has led to the wide acceptance of 980 nm diodes as potential pump sources for Er3-doped fiber amplifiers EDFA. In particular, ridge waveguides have proven to be ideal structures for such devices 1,21 promising ease of manufacture, and potentially high reliability. In this paper, we report high coupled power from ridge waveguide lasers into large NA single-mode fiber designed for use in EDFA systems, using an industry-standard 14-pin DIL package outline. We also report systems performance obtained using these lasers as the pump source in a broad-band EDFA power amplifier. The epitaxial structure is a graded-index separate confinement heterostructure, grown in a low pressure MOCVD reactor. A single quantum well was employed, using a strained InGaAs layer whose composition and thickness were engineered to provide lasing at a wavelength of 980 nm. The threshold current density, measured on a 50 Jim oxide stripe structure with 500 um cavity length, was 272Acm-2.
- Lasers and Masers
- Electrical and Electronic Equipment