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Optical Engineering • Open Access • new

Microwave phase-control scheme based on optical beat wave generation and propagation in an optical fiber
Author(s): Tomoyuki Uehara; Kenichiro Tsuji; Guido Mueller; David Tanner

Paper Abstract

A microwave phase-control scheme is proposed and experimentally demonstrated. Two lasers are combined in an optical fiber coupler to generate a beat signal. The beat frequency is tuned by controlling the frequency of one laser. Using the phase shift of the beat waves with different frequencies during the propagation in an optical fiber, the phase of the radio-frequency (RF) signal generated by a photodetector (PD) can be controlled. Using the phase shift during the propagation of beat waves in an optical fiber with different beat frequencies, the phase of the RF signal generated by a PD connected to the fiber can be controlled. A tunable phase shift ranging from 0 deg to 1400 deg is obtained for frequencies from 6 to 10 GHz. This scheme offers the advantages of fast tuning and precise phase control of an RF signal.

Paper Details

Date Published: 8 January 2018
PDF: 6 pages
Opt. Eng. 57(1) 016106 doi: 10.1117/1.OE.57.1.016106
Published in: Optical Engineering Volume 57, Issue 1
Show Author Affiliations
Tomoyuki Uehara, National Defense Academy (Japan)
Univ. of Florida (United States)
Kenichiro Tsuji, National Defense Academy (Japan)
Guido Mueller, Univ. of Florida (United States)
David Tanner, Univ. of Florida (United States)

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