Optical narrow-band filters using optical amplification with distributed feedback

Journal Article · Mon Oct 31 23:00:00 EST 1988 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/3.8561· OSTI ID:6403998

Magari, K; Kawaguchi, H; Oe, K; Fukuda, M ^[1]

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1. NTT Opto-Electronics Labs., Atsugi-shi, Kanagawa Prefecture, 243-01 (JP)

Amplification characteristics of the distributed feedback laser amplifiers are studied. The amplifier has a narrow, single frequency gain-bandwidth and the gain maximum frequency tunability. With these advantages, the amplifier can be applied as an optical narrow-band filter. This filter has optical frequency selectivity with an extinction ratio of better than -15 dB for two optical inputs separated by 9.8 GHz and having different optical input powers. By using a multielectrode distributed feedback laser amplifier, the wide-range tunability of a gain maximum frequency (33.3 GHz) can be obtained while maintaining a constant gain and a constant gain-bandwidth. Optical frequency selection with an extinction ratio of better than -20 dB can be obtained for two optical inputs separated by 15.4 GHz and having the same input powers.

• OSTI ID: 6403998
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 24:11; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFICATION
AMPLIFIERS
ELECTRONIC EQUIPMENT
EQUIPMENT
FEEDBACK
FILTERS
FREQUENCY RANGE
FREQUENCY SELECTION
GAIN
GHZ RANGE
GHZ RANGE 01-100
LASERS
LINE WIDTHS
OPTICAL FILTERS
POWER INPUT
TUNING