Distortion in linearized electrooptic modulators

Author

Bridges, William B. ; Schaffner, James H.

Author_Institution

California Inst. of Technol., Pasadena, CA, USA

Volume

43

Issue

9

fYear

1995

fDate

9/1/1995 12:00:00 AM

Firstpage

2184

Lastpage

2197

Abstract

Intermodulation and harmonic distortion are calculated for a simple fiber-optic link with a representative set of link parameters and a variety of electrooptic modulators: simple Mach-Zehnder, linearized dual and triple Mach-Zehnder, simple directional coupler (two operating points), and linearized directional coupler with one and two dc electrodes. The resulting dynamic ranges, gains, and noise figures are compared for these modulators. A new definition of dynamic range is proposed to accommodate the more complicated variation of intermodulation with input power exhibited by linearized modulators. The effects of noise bandwidth, preamplifier distortion, and errors in modulator operating conditions are described

Keywords

Mach-Zehnder interferometers; electro-optical modulation; harmonic distortion; intermodulation distortion; optical communication equipment; optical directional couplers; optical fibre communication; optical fibres; optical noise; Mach-Zehnder modulator; directional coupler; dynamic range; electrooptic modulators; fiber-optic link; harmonic distortion; intermodulation; linearized modulators; link parameters; modulator operating conditions; noise bandwidth; noise figures; preamplifier distortion; Directional couplers; Dynamic range; Electrooptic modulators; Interference; Nonlinear optics; Optical distortion; Optical interferometry; Optical modulation; Optical receivers; Optical sensors;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.414563

Filename

414563