Optoelectronic frequency discriminated phase tuning technology and its applications

Gong-Ru Lin; Yung-Cheng Chang

doi:10.1117/12.392112

11 July 2000 Optoelectronic frequency discriminated phase tuning technology and its applications

Gong-Ru Lin, Yung-Cheng Chang

Proceedings Volume 4078, Optoelectronic Materials and Devices II; (2000) https://doi.org/10.1117/12.392112
Event: Photonics Taiwan, 2000, Taipei, Taiwan

Abstract

By using a phase-tunable optoelectronic phase-locked loop, we are able to continuously change the phase as well as the delay-time of optically distributed microwave clock signals or optical pulse train. The advantages of the proposed technique include such as wide-band operation up to 20GHz, wide-range tuning up to 640 degrees, high tuning resolution of <6x10^-2 degree/mV, ultra-low short-term phase fluctuation and drive of 4.7x10^-2 degree and 3.4x10^{- 3} degree/min, good linearity with acceptable deviations, and frequency-independent transferred function with slope of nearly 90 degrees/volt, etc. The novel optoelectronic phase shifter is performed by using a DC-voltage controlled, optoelectronic-mixer-based, frequency-down-converted digital phase-locked-loop. The maximum delay-time is continuously tunable up to 3.9 ns for optical pulses repeated at 500 MHz from a gain-switched laser diode. This corresponds to a delay responsivity of about 0.54 ps/mV. The using of the OEPS as being an optoelectronic delay-time controller for optical pulses is demonstrated with temporal resolution of <0.2 ps. Electro-optic sampling of high-frequency microwave signals by using the in-situ delay-time-tunable pulsed laser as a novel optical probe is primarily reported.

Citation Download Citation

Gong-Ru Lin and Yung-Cheng Chang "Optoelectronic frequency discriminated phase tuning technology and its applications", Proc. SPIE 4078, Optoelectronic Materials and Devices II, (11 July 2000); https://doi.org/10.1117/12.392112

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