Title :
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
fDate :
6/1/1997 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
