Title :
High performance pump laser modules for erbium-doped fiber amplifiers
Author :
Huang, S.Y. ; Greenberg, L.A. ; Corser, T.A.
Author_Institution :
AT&T Bell Labs., Breinigsville, PA, USA
Abstract :
A 14-pin butterfly pump laser module for erbium-doped fiber amplifiers is described. A high coupling microlens has been realized by etching. A coupling efficiency of 74% has been measured for 1.48-μm pump lasers with a variety of far-field angles. The etched microlens is fabricated by batch process and is highly manufacturable. This microlens also provides less reflection and thus interferes less with the operation of lasers. A ΔT of 60°C was measured for an anticipated end-of-life laser chip power dissipation of 1.2 W. The observed performance degradation after a variety of thermal and mechanical shocks is found to be negligible. A maximum change of 5% in coupling efficiency was measured after 2000 hr of 85°C bake. The TEC (thermoelectric cooler) resistance measurement showed negligible change, Less than 0.2 dB of temperature tracking error was observed from the routine fabrication data
Keywords :
erbium; fibre lasers; integrated optics; optical communication equipment; optical couplers; optical fibres; optical pumping; reliability; thermal shock; 1.2 W; 1.48 mum; 2000 h; 74 percent; 85 degC; Er3+-doped fibre; batch process; butterfly pump laser module; coupling efficiency; coupling microlens; end-of-life laser chip power dissipation; erbium-doped fiber amplifiers; far-field angles; mechanical shocks; performance degradation; temperature tracking error; thermal shocks; thermoelectric cooler resistance measurement; Electrical resistance measurement; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Etching; Laser excitation; Lenses; Microoptics; Optical coupling; Pump lasers; Semiconductor device measurement;
Conference_Titel :
Electronic Components and Technology Conference, 1993. Proceedings., 43rd
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0794-1
DOI :
10.1109/ECTC.1993.346736
