Distortion characteristics of optical directional coupler modulators

Author

Halemane, T.R. ; Korotky, S.K.

Author_Institution

AT&T Bell Lab., Holmdel, NJ, USA

Volume

38

Issue

5

fYear

1990

fDate

5/1/1990 12:00:00 AM

Firstpage

669

Lastpage

673

Abstract

A theoretical analysis is made of the nonlinearities of the intensity modulation response of the optical directional coupler, as a function of bias point for the case of phase-mismatch modulation, and the results are compared with those of interferometric modulators. The interferometric, standard 2×2 directional coupler and the 1×2 y-fed directional coupler modulators are shown to exhibit very similar intermodulation distortion effects. At 4% optical modulation depth, the third-order intermodulation products are -74 dB, -72 dB, and -73.6 dB respectively, below the carrier level

Keywords

intermodulation; optical couplers; optical modulation; bias point; intensity modulation response; interferometric modulators; intermodulation distortion effects; nonlinearities; optical directional coupler modulators; optical modulation depth; phase-mismatch modulation; third-order intermodulation products; Directional couplers; Electrooptic modulators; Fiber nonlinear optics; Nonlinear optics; Optical distortion; Optical interferometry; Optical modulation; Optical receivers; Optical sensors; Optical waveguides;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.54939

Filename

54939