Reduction of optical insertion loss in traveling wave electroabsorption modulators by undercut-etching the active region

Author

Cheng, Wen-Chin ; Chiu, Yi-Jen ; Bowers, John E.

Author_Institution

Dept. of Opto-Electro Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

Volume

2

fYear

2003

fDate

27-28 Oct. 2003

Firstpage

1032

Abstract

In this paper, an improved traveling wave electroabsorption modulators (TWEAM) waveguides with selectively undercut the active region is proposed and fabricated. Optical transmission on wavelength shows that the undercut-active-layer waveguide (UAW) structure has advantage over the conventional ridge-waveguide (CRW) due to the lower propagation loss and the difference (about 2 to 3 dB) between the UAW structures and CRW structures indicates that the optical insertion loss of UAW type is about 2 to 3 dB lower than the CRW. This kind of structure has high potential for the application of high-speed and lower optical insertion-loss EAMs.

Keywords

electroabsorption; etching; light propagation; light transmission; optical fabrication; optical loss measurement; optical losses; optical modulation; optical waveguides; 2 to 3 dB; conventional ridge-waveguide; optical fabrication; optical insertion loss reduction; optical transmission; propagation loss; traveling wave electroabsorption modulator waveguide; undercut-active-layer waveguide structure; undercut-etching; High speed optical techniques; Insertion loss; Optical computing; Optical devices; Optical fiber communication; Optical fiber losses; Optical losses; Optical modulation; Optical waveguides; Propagation losses;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE

ISSN

1092-8081

Print_ISBN

0-7803-7888-1

Type

conf

DOI

10.1109/LEOS.2003.1253161

Filename

1253161