1.5 μm phase-controlled distributed feedback wavelength tunable optical filter

Author

Numai, Takahiro

Author_Institution

NEC Corp., Tsukuba, Japan

Volume

28

Issue

6

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

1508

Lastpage

1512

Abstract

A 1.5-μm phase-controlled distributed feedback wavelength-tunable optical filter is studied. This is the first optical filter which controls the transmissivity (gain) and the transmission wavelength independently. Wavelength tuning range as wide as 43 GHz (3.4 Å) with high constant gain of 27 dB has been achieved. A five-channel wavelength selection with less than -10 dB crosstalk is expected with this filter. This device also operates as a wavelength tunable laser, and the wavelength tuning range as a laser is larger than as a filter. The reason is studied, and it is shown that suppression of the submodes is important to expand the wavelength tuning range

Keywords

distributed feedback lasers; integrated optics; laser tuning; optical communication equipment; optical filters; 1.5 micron; 27 dB; constant gain; crosstalk; five-channel wavelength selection; phase-controlled distributed feedback wavelength tunable optical filter; submodes; transmission wavelength; transmissivity; wavelength division photonic switching systems; wavelength tunable laser; wavelength tuning range; Band pass filters; Distributed feedback devices; Gratings; Laser tuning; Optical control; Optical filters; Optical tuning; Optical waveguides; Refractive index; Tunable circuits and devices;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.135303

Filename

135303