Efficient highly stable laser diode module for single-mode fiber employing a combination of hemispherical ended GRIN rod lens and virtual fiber

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.28.002012· OSTI ID:6218285

Kawano, K; Mitomi, O; Yanagibashi, M; Nozawa, T

An efficient and practical laser diode module is demonstrated forsingle-mode fiber applications. The module is developed through use of anearlier proposed combination lens method, where a hemispherical ended gradedindex rod lens and virtual fiber are employed. Since lens and virtual fibermisalignment tolerances are large in this coupling method, the YAG laser weldingtechnique is easily applicable. This laser diode module has not only a simplestructure but also high coupling efficiency, excellent reproducibility, andextremely high reliability.

• Research Organization: NTT Optoelectronics Laboratories, 3-1 Morinosato Wakamiya, Atugi-shi, Kanagawa Pref. 243-01, Japan(JP)
• OSTI ID: 6218285
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 28:11; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
COUPLINGS
EQUIPMENT
FABRICATION
FIBERS
LASERS
LOSSES
OPTICAL EQUIPMENT
OPTICAL FIBERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
STABILITY