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Published September 1995 | Version Published
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Distortion in linearized electrooptic modulators

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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.

Additional Information

© 1995 IEEE. Reprinted with permission. Manuscript received January 9, 1995; revised May 5, 1995. This work was supported in part by Contract no. F30602-91-C-0104 to Hughes Research Laboratories from the US Air Force, Rome Laboratories (N. P. Bernstein technical monitor) and by the ARPA Technology Reinvestment Project on Analog Optoelectronic Modules, Agreemcnt No. MDA972-94-3-0016. The authors would like to thank R. H. Buckley, R. R. Hayes, J. F. Lam, and C. L. Tangonan of Hughes Research Laboratories; N. P. Bernstein of the Air Force Rome Laboratory; B.M. Hendrickson of the Air Force Rome Laboratory and ARPA; B. Hui of ARPA; G. E. Betts and C. H. Cox of Lincoln Laboratories; F.T. Sheehy of Caltech (now with McKinsey and Co.), and R. A. Becker of IOCC for many helpful discussions and comments.

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Eprint ID
4522
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CaltechAUTHORS:BRIieeetmtt95

Funding

Rome Air Development Center
F30602-91-C-0104
Advanced Research Projects Agency (ARPA)
MDA972-94-3-0016

Dates

Created
2006-08-25
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Updated
2021-11-08
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