Operational characteristics of an optically implemented microwave frequency synthesizer

Irwin J. Abramovitz; D. E. Flechsig; Edward C. Malarkey; Norman P. Bernstein

doi:10.1117/12.218522

1 October 1995 Operational characteristics of an optically implemented microwave frequency synthesizer

Irwin J. Abramovitz, D. E. Flechsig, Edward C. Malarkey, Norman P. Bernstein

Proceedings Volume 2560, Optical Technology for Microwave Applications VII; (1995) https://doi.org/10.1117/12.218522
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

A multistage optically implemented microwave frequency synthesizer has been designed and fabricated. The concept and implementation are described with emphasis on operational characteristics of a prototype 3-stage unit. The synthesizer is designed as an optical analogue of the mix-and-divide approach to frequency synthesis taking advantage of the single-sideband, supressed-carrier modulation produced by the Bragg acousto-optic interaction and the sum- only or difference-only mixing of optical heterodyne detection without the need for any in- stage passband filtering. The synthesizer exhibits a 500 MHz bandwidth and completely switches and settles stably upon a new frequency within 250 nanoseconds. Phase noise was measured to be less than -130 dBc/Hz at 10 KHz offset from the carrier.

Citation Download Citation

Irwin J. Abramovitz, D. E. Flechsig, Edward C. Malarkey, and Norman P. Bernstein "Operational characteristics of an optically implemented microwave frequency synthesizer", Proc. SPIE 2560, Optical Technology for Microwave Applications VII, (1 October 1995); https://doi.org/10.1117/12.218522

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