Reduced loss microwave fiber-optic links by intracavity modulation and carrier suppression

Author

Glassner, David S. ; Frankel, Michael Y. ; Esman, Ronald D.

Author_Institution

Lab. for Phys. Sci., College Park, MD., USA

Volume

7

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

57

Lastpage

59

Abstract

Fiber-optic links are limited by the large V_π of commercial modulators and by nonlinearities in the photodiodes used to demodulate the RF signals. Intracavity modulation and carrier suppression is shown to enhance the received microwave power in a fiber-optic link for a given optical power at a receiver. The carrier wavelength is automatically locked to the intracavity reflective notch filter that suppresses the carrier relative to the modulation sidebands. Link loss reductions exceeding 10 db were measured for frequencies from 1 to 25 GHz. Harmonic distortions can be decreased by combining this technique with above-quadrature biasing

Keywords

microwave links; optical fibre communication; optical fibre losses; optical modulation; 1 to 25 GHz; above-quadrature biasing; carrier suppression; harmonic distortion; intracavity modulation; intracavity reflective notch filter; link loss reductions; microwave fiber-optic links; microwave power; reduced loss links; Distortion measurement; Microwave filters; Optical distortion; Optical fiber filters; Optical filters; Optical losses; Optical modulation; Optical receivers; Photodiodes; Power harmonic filters;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.556031

Filename

556031