Broadband microwave fiber optic links with linearized integrated-optic modulators

James H. Schaffner; William B. Bridges

doi:10.1117/12.177403

10 June 1994 Broadband microwave fiber optic links with linearized integrated optic modulators

James H. Schaffner, William B. Bridges

Proceedings Volume 2155, Optoelectronic Signal Processing for Phased-Array Antennas IV; (1994) https://doi.org/10.1117/12.177403
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

A universally accepted figure of merit for analog microwave transmission links is the spur-free dynamic range (SFDR), which is the ratio (usually expressed in dB) of the largest to smallest signal a link can transmit and receive without introducing any measurable distortion. This paper presents the result of a study of broadband, microwave fiber optic links that contain high- linearity integrated-optic modulators. This study focused on two distinct modulator forms, the dual-parallel Mach-Zehnder modulator and the linearized directional-coupler modulator. Computer simulations were performed to determine how the SFDR was affected by variations of modulator parameters. In addition, the dynamic range and noise figure of links that included preamplifiers were calculated. The results of the link analysis was that the linearized directional-coupler modulator provided the highest SFDR for a broadband microwave fiber optic link.

Citation Download Citation

James H. Schaffner and William B. Bridges "Broadband microwave fiber optic links with linearized integrated optic modulators", Proc. SPIE 2155, Optoelectronic Signal Processing for Phased-Array Antennas IV, (10 June 1994); https://doi.org/10.1117/12.177403

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