Tunable amplification properties of distributed feedback laser diodes

Journal Article · Tue Jan 31 23:00:00 EST 1989 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/3.16259· OSTI ID:6183608

Kikushima, K; Nawata, K; Koga, M

This paper describes the tunable amplification properties of a distributed feedback laser diode (DFB-LD), and determines its performance as an optical filter, its tuning range, amplification gain, crosstalk due to submodes, and signal-to-noise ratio. To achieve maximum amplification with the least noise, the DFB-LD injection current is held at or near the threshold value by feedback from an optical detector. The resonant wavelength is precisely controlled over a range of 2.0 nm (254 GHz) by varying the temperature of the DFB-LD, while at the same time the injection current is kept at the optimum value by the above feedback system. By exploiting the tunable amplification properties of DFB-LD, an optical tunable filter was experimentally confirmed.

• Research Organization: NTT Transmission Systems Labs., Nippon Telegraph and Telephone Corp., 1-2356 Take Yokosuka-shi, Kanagawa-ken (JP)
• OSTI ID: 6183608
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 25:2; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFICATION
DATA
EXPERIMENTAL DATA
FILTERS
INFORMATION
LASERS
NUMERICAL DATA
OPTICAL FILTERS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SIGNAL-TO-NOISE RATIO