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Optical Engineering

Tunable optoelectronic oscillator with an embedded delay-line oscillator for fine steps
Author(s): Yichao Teng; Baofu Zhang; Yiwang Chen; Jianhua Li; Lin Lu; Zhongxiao Pang
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Paper Abstract

Tunable optoelectronic oscillator (OEO) with an embedded delay-line oscillator (EDO) for fine steps is presented. A delay-line oscillator consisting of an amplifier, phase shifter, and electrical delay line is embedded in the general single loop OEO. The oscillation frequency is controlled by the EDO loop phase, which is adjusted by the phase shifter. Without any narrow radio frequency bandpass filter, about 340 MHz tunable range with a fine step of ∼100  kHz is realized by directly tuning the direct current voltage of the phase shifter for 8 GHz oscillation. We also experimentally demonstrate κ-band tunable microwave signal generation within 22.18 to 23.32 GHz. The tunable accuracy and tunable range have a better performance compared to other OEO schemes with a fine frequency tunable step. The phase noise of the generated 22.25 GHz microwave signal is −108.7  dBc/Hz at 10 kHz offset.

Paper Details

Date Published: 10 December 2015
PDF: 4 pages
Opt. Eng. 55(3) 031117 doi: 10.1117/1.OE.55.3.031117
Published in: Optical Engineering Volume 55, Issue 3
Show Author Affiliations
Yichao Teng, The PLA Univ. of Science and Technology (China)
Baofu Zhang, The PLA Univ. of Science and Technology (China)
Yiwang Chen, The PLA Univ. of Science and Technology (China)
Jianhua Li, The PLA Univ. of Science and Technology (China)
Lin Lu, The PLA Univ. of Science and Technology (China)
Zhongxiao Pang, The PLA Univ. of Science and Technology (China)


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