Spot-size conversion and near-circular far-field profile for efficient laser-fiber coupling

Author

Rahman, B.M.A. ; Wongcharoen, T. ; Rajarajan, M. ; Grattan, K.T.V.

Author_Institution

Dept. of Electr. Electron. & Inf. Eng., City Univ., London, UK

Volume

2

fYear

2000

fDate

2000

Firstpage

782

Abstract

When a photonic integrated circuit (PIC), incorporating active devices, producing a small and noncircular spot-size is directly butt-coupled to single mode fiber (SMF) with a larger and circular spot-size, use of this arrangement can cause typically a 10 dB (or 90% power) loss. In this presentation, an approach of using two non-identical but phased matched uniform coupled waveguides is considered, to achieve the necessary spot-size conversion where such a system can be easily fabricated by using standard techniques

Keywords

integrated optics; optical fibre couplers; active device; butt coupling; fabrication; laser-fiber coupling; near-circular far-field profile; phased matched waveguide; photonic integrated circuit; power loss; single-mode fiber; spot-size conversion; Coupling circuits; Fabrication; Optical coupling; Optical fiber losses; Optical fibers; Optical refraction; Optical variables control; Optical waveguides; Power lasers; Waveguide lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society 2000 Annual Meeting. LEOS 2000. 13th Annual Meeting. IEEE

Conference_Location

Rio Grande

ISSN

1092-8081

Print_ISBN

0-7803-5947-X

Type

conf

DOI

10.1109/LEOS.2000.894087

Filename

894087