This paper reports the results of temperature cycling and thermal shock tests on commercially available laser modules designed for uncontrolled environments. Components in these installations must withstand a much wider temperature range than that of a telephone central office. The lasers tested in our experiment include receptacle packages, cylindrical packages with pigtails and rectangular packages with pigtails. We have observed some anomalous characteristics such as unstable spectra, non-linear L-I (power versus current), and non-constant front-to-rear tracking ratio. The appearance of these anomalies challenges our ability to economically screen those problem devices.

Date Published: 1 February 1991
PDF: 13 pages
Proc. SPIE 1366, Fiber Optics Reliability: Benign and Adverse Environments IV, (1 February 1991); doi: 10.1117/12.24687

Published in SPIE Proceedings Vol. 1366:
Fiber Optics Reliability: Benign and Adverse Environments IV
Roger A. Greenwell; Dilip K. Paul, Editor(s)