Finite-difference time-domain analysis of laser diodes integrated with tapered beam-expanders

Author

Takahashi, Masaharu ; Ohtoshi, T.

Author_Institution

Central Res. Lab., Hitachi Ltd., Tokyo, Japan

Volume

11

Issue

5

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

524

Lastpage

526

Abstract

Waveguide properties of laser diodes integrated with horizontally tapered beam-expanders are analyzed by the finite-difference time-domain method. The taper length dependence of the radiation loss and fiber-coupling efficiency are clarified. Lower loss and higher fiber-coupling efficiency are achieved in the exponentially tapered beam-expander compared with a linearly tapered one having an equivalent length.

Keywords

finite difference time-domain analysis; integrated optics; laser theory; optical transmitters; semiconductor device models; semiconductor lasers; equivalent length; fiber-coupling efficiency; finite-difference time-domain analysis; finite-difference time-domain method; horizontally tapered beam-expanders; laser diodes; linearly tapered; radiation loss; taper length dependence; tapered beam-expanders; waveguide properties; Diode lasers; Finite difference methods; Optical fiber losses; Optical modulation; Optical propagation; Optical reflection; Optical refraction; Optical variables control; Optical waveguides; Time domain analysis;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.759386

Filename

759386