Special Section on Microwave Photonics: Deep Interactions between Microwaves and Lightwaves

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

[+] Author Affiliations
Yichao Teng, Baofu Zhang, Yiwang Chen, Jianhua Li, Lin Lu, Zhongxiao Pang

PLA University of Science and Technology, No. 1 Haifu Street, Nanjing 210007, China

Opt. Eng. 55(3), 031117 (Dec 10, 2015). doi:10.1117/1.OE.55.3.031117
History: Received August 1, 2015; Accepted October 28, 2015
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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 100kHz 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 108.7dBc/Hz at 10 kHz offset.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Yichao Teng ; Baofu Zhang ; Yiwang Chen ; Jianhua Li ; Lin Lu, et al.
"Tunable optoelectronic oscillator with an embedded delay-line oscillator for fine steps", Opt. Eng. 55(3), 031117 (Dec 10, 2015). ; http://dx.doi.org/10.1117/1.OE.55.3.031117


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