Integration of polyimide waveguides with traveling-wave phototransistors

Author

Prakash, D.P. ; Scott, D.C. ; Fetterman, H.R. ; Matloubian, M. ; Du, Q. ; Wang, W.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

9

Issue

6

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

800

Lastpage

802

Abstract

Polymer waveguides with low optical losses are becoming increasingly important for photonic circuits. Among these, polyimide waveguides have properties which distinguish them as a versatile interconnect medium for practical optoelectronic integrated circuits. We have integrated these waveguides with traveling-wave phototransistors (TW-HPT´s) in which optical power transfer occurs through leaky mode coupling of light from the waveguide along the length of the device. Independent optimization of the waveguide and phototransistor is now possible permitting superior coupling efficiency and detector bandwidth. We present proof-of-concept results for a 2-mm-long TW-HPT integrated with a 8×10-μm polyimide waveguide.

Keywords

heterojunction bipolar transistors; integrated optoelectronics; optical couplers; optical interconnections; optical losses; optical polymers; optical waveguides; phototransistors; polymer films; 2 mm; 20 GHz; AlInAs-InGaAs; coupling efficiency; detector bandwidth; interconnect medium; leaky mode coupling; low optical losses; optical power transfer; optoelectronic integrated circuits; photonic circuits; phototransistor optimization; polyimide waveguide integration; proof-of-concept results; traveling-wave HBT; traveling-wave phototransistors; waveguide optimization; Coupling circuits; Integrated circuit interconnections; Integrated optics; Optical interconnections; Optical losses; Optical polymers; Optical waveguides; Photonic integrated circuits; Phototransistors; Polyimides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.584995

Filename

584995