Tunable optoelectronic oscillator with an embedded delay-line oscillator for fine steps

Yichao Teng; Baofu Zhang; Yiwang Chen; Jianhua Li; Lin Lu; Zhongxiao Pang

doi:10.1117/1.OE.55.3.031117

10 December 2015 Tunable optoelectronic oscillator with an embedded delay-line oscillator for fine steps

Yichao Teng, Baofu Zhang, Yiwang Chen, Jianhua Li, Lin Lu, Zhongxiao Pang

Author Affiliations +

Optical Engineering, Vol. 55, Issue 3, 031117 (December 2015). https://doi.org/10.1117/1.OE.55.3.031117

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.

Citation Download Citation

Yichao Teng, Baofu Zhang, Yiwang Chen, Jianhua Li, Lin Lu, and Zhongxiao Pang "Tunable optoelectronic oscillator with an embedded delay-line oscillator for fine steps," Optical Engineering 55(3), 031117 (10 December 2015). https://doi.org/10.1117/1.OE.55.3.031117

Published: 10 December 2015

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