Integrated micro-cylindrical lens with laser diode for single-mode fiber coupling

Author

Yongqi Fu ; Ngoi Kok Ann Bryan ; Ong Nan Shing

Author_Institution

Sch. of Mech. & Production Eng., Nanyang Technol. Inst., Singapore

Volume

12

Issue

9

fYear

2000

Firstpage

1213

Lastpage

1215

Abstract

The integration of a laser diode with a microlens on its emitting surface is introduced in this letter. Calculated results are based on integration of micro-cylindrical lens to laser diode. The lens is directly microfabricated on the emitting surface of the laser diode with operating wavelength 635 nm by focused ion beam (FIB) SiO₂ deposition function. The controlled SiO₂ deposition process is realized by programming our FIB machine. Using single-mode fiber with core diameter of 10 μm as testing prototype, coupling efficiency of the compact and miniaturized system reaches as high as 80.1%. Measured far field angle (full angle) is 2.1 and 31/spl deg/ with and without the lens, respectively.

Keywords

integrated optics; ion beam assisted deposition; microlenses; optical couplers; optical fabrication; optical fibre couplers; optical focusing; semiconductor lasers; 635 nm; 80.1 percent; FIB machine; SiO/sub 2/; SiO/sub 2/ deposition function; controlled SiO/sub 2/ deposition process; core diameter; coupling efficiency; directly microfabricated; emitting surface; far field angle; focused ion beam; integrated micro-cylindrical lens; laser diode; microlens; miniaturized system; operating wavelength; single-mode fiber; single-mode fiber coupling; Diode lasers; Goniometers; Ion beams; Lenses; Microoptics; Optical fiber testing; Prototypes; Surface emitting lasers; Surface waves; System testing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.874239

Filename

874239