High coupling efficiency and high responsivity 1.3 μm light emission and detection diodes with a butt-jointed spot-size converter

Author

Suzaki, Yasumasa ; Matsumoto, Shinichi ; Tohmori, Y. ; Kishi, Kotaro ; Okamoto, Mitsuo ; Yamamoto, Manabu

Author_Institution

NTT Opto-Electron. Labs., Kanagawa

Volume

32

Issue

14

fYear

1996

fDate

7/4/1996 12:00:00 AM

Firstpage

1318

Lastpage

1319

Abstract

For bi-directional transmission in optical subscriber loops, the authors have fabricated light emission and detection (LEADs) diodes with spot-size converter region formed by butt-joint selective growth. With the spot-size converter region, this device has a low-loss coupling of 2.5 dB and high responsivity of 0.35 A/W. Using a bulk detection layer, uniform polarisation and wavelength dependence with wavelengths up to 40 nm longer than the lasing wavelength are achieved when the diodes are used as detectors. A low threshold current of 12 mA at 25°C and high temperature operation are also demonstrated when the diodes are operated as lasers

Keywords

light emitting diodes; optical fibre couplers; optical fibre polarisation; optical fibre subscriber loops; photodetectors; photodiodes; 1.3 micrometre; 12 mA; 2.5 dB; 25 degC; LEADs; bi-directional transmission; butt-joint selective growth; butt-jointed spot-size converter; coupling efficiency; light detection diodes; light emission diodes; low-loss coupling; optical subscriber loops; responsivity; threshold current; uniform polarisation; wavelength dependence;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19960864

Filename

503649