title: High-power 980-nm pump laser modules for erbium-doped fiber amplifiers.
abstract: High-power fiber-coupled pump modules with an emission wavelength of 980 nm and output powers in excess of 200 mW, as measured at the fiber end, have been fabricated. Laser-to-fiber coupling efficiencies in excess of 77% are observed to be in excellent agreement with a mathematical model. Also, the output power stability of these modules has been monitored during severe temperature cycling, and the relative power variation was less than 4% for all the tested modules.
authors.affiliation: Spectracom, Incorporated, 4459 White Bear Parkway, White Bear Lake, Minnesota 55110, USA. martin.achtenhagen@uniphasele.com
authors.forename: M
authors.initials: M
authors.lastname: Achtenhagen
authors.forename: M
authors.initials: M
authors.lastname: McElhinney
authors.forename: S
authors.initials: S
authors.lastname: Nolan
authors.forename: A
authors.initials: A
authors.lastname: Hardy