Dual-function electroabsorption waveguide modulator/detector for optoelectronic transceiver applications

Author

Welstand, R.B. ; Pappert, S.A. ; Sun, C.K. ; Zhu, J.T. ; Liu, Y.Z. ; Yu, P.K.L.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA

Volume

8

Issue

11

fYear

1996

Firstpage

1540

Lastpage

1542

Abstract

A Franz-Keldysh effect InGaAsP electroabsorption waveguide device is utilized as a high-frequency, high-linear dynamic range modulator and photodetector. The dual-function modulator/photodetector can be useful in compact transmit/receive front end antenna architectures. Adjusting the electrical bias to the reverse-biased p-i-n diode, either efficient optical modulation or detection is demonstrated. As an electroabsorption modulator, a fiber optic link with a -17.4-dB RF loss and a 124-dB-Hz/sup 4/5/ suboctave spurious-free dynamic range is obtained with electrical biases in the 2 to 3 V range. As a waveguide photodetector, a 0.45-A/W fiber coupled responsivity, photocurrents up to 20 mA, and an output second-order intercept of +34.5 dBm are achieved at 7-V electrical bias.

Keywords

III-V semiconductors; antenna accessories; electro-optical modulation; electroabsorption; gallium arsenide; gallium compounds; indium compounds; integrated optoelectronics; optical communication equipment; optical fibre couplers; p-i-n photodiodes; photoconductivity; photodetectors; transceivers; 17.4 dB; 2 to 3 V; 20 mA; 7 V; Franz-Keldysh effect; InGaAsP; InGaAsP electroabsorption waveguide device; compact transmit/receive front end antenna architectures; dB RF loss; dual-function electroabsorption waveguide modulator/detector; dual-function modulator/photodetector; efficient optical modulation; electrical bias; electrical biases; electroabsorption modulator; fiber coupled responsivity; fiber optic link; high-frequency high-linear dynamic range modulator; optoelectronic transceiver applications; output second-order intercept; photocurrents; photodetector; reverse-biased p-i-n diode; suboctave spurious-free dynamic range; waveguide photodetector; Dynamic range; Optical detectors; Optical fibers; Optical modulation; Optical waveguides; P-i-n diodes; Photodetectors; Receiving antennas; Transceivers; Transmitting antennas;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.541576

Filename

541576