Widely tunable coupled-ring reflector laser diode

Author

Chung, Youngchul ; Kim, Doo-Gun ; Dagli, Nadir

Author_Institution

Dept. of Electron. & Commun. Eng., Kwangwoon Univ., Seoul, South Korea

Volume

17

Issue

9

fYear

2005

Firstpage

1773

Lastpage

1775

Abstract

A coupled-ring reflector (CRR), which is composed of two coupled rings both of which are coupled with a straight waveguide, is applied to a widely tunable laser diode. When the radii of two rings are slightly different, the peak reflection wavelength of the CRR can be widely tuned over a few tens nanometers by a small amount of refractive index change. It is shown that a few tens nanometers of tuning with a sidemode suppression ratio exceeding 45 dB both for adjacent cavity mode and for adjacent ring mode is achievable in the widely tunable CRR laser diode.

Keywords

integrated optics; laser cavity resonators; laser modes; laser tuning; optical couplers; refractive index; ring lasers; semiconductor lasers; waveguide lasers; cavity mode; coupled-ring reflector laser diode tuning; refractive index; ring mode; sidemode suppression ratio; straight waveguide; Diode lasers; Laser tuning; Optical coupling; Optical filters; Optical reflection; Optical ring resonators; Refractive index; Resonance; Resonator filters; Tunable circuits and devices; Integrated optics; ring resonators; tunable filters; tunable laser diodes;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.852643

Filename

1498854