Highly external optical feedback tolerant 1.49 μm single-mode lasers with partially corrugated gratings

Author

Gotoda, Mitsunobu ; Nishimura, Tetsuya ; Matsumoto, Keisuke ; Aoyagi, Toshitaka ; Yoshiara, Kiichi

Author_Institution

Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Amagasaki

fYear

2008

fDate

14-18 Sept. 2008

Firstpage

21

Lastpage

22

Abstract

A 1490 nm InGaAsP single-mode laser diode, with high endurance against external optical feedback, was realized utilizing an optimized partially corrugated grating and a window-mirror-structure. The gratingpsilas length and the coupling coefficient were designed to enable moderate output power, low feedback sensitivity and a SMSR of 40 dB simultaneously. The relative intensity noise (RIN) was maintained less than -120 dB/Hz under strong external optical feedback as high as -10 dB.

Keywords

III-V semiconductors; diffraction gratings; gallium arsenide; gallium compounds; indium compounds; laser cavity resonators; laser feedback; laser mirrors; laser modes; laser noise; semiconductor lasers; InGaAsP; coupling coefficient; external optical feedback; partially corrugated gratings; relative intensity noise; single-mode laser diode; wavelength 1490 nm; window-mirror structure; Coatings; Diode lasers; Distributed feedback devices; Fiber lasers; Gratings; Isolators; Laser feedback; Laser noise; Optical coupling; Optical feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Laser Conference, 2008. ISLC 2008. IEEE 21st International

Conference_Location

Sorrento

Print_ISBN

978-1-4244-1782-7

Electronic_ISBN

978-1-4244-1783-4

Type

conf

DOI

10.1109/ISLC.2008.4635989

Filename

4635989