7 December 2015 Photonics-based tunable and broadband radio frequency converter
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This paper is regarding the concept and development of a photonics-based tunable and broadband radio frequency converter (PBRC). It employs an external modulation technique to generate and reconfigure its output frequency, a digital circuit to manage the modulators’ bias voltages, and an optical interface for connecting it to optical-wireless networks based on radio-over-fiber technology. The proposed optoelectronic device performs photonics-based upconversion and downconversion as a function of the local oscillator frequency and modulators’ bias points. Experimental results demonstrate a radiofrequency (RF) carrier conversion with spectral purity over the frequency range from 750 MHz to 6.0 GHz, as well as the integration of the photonics-based converter with an optical backhaul based on a 1.5-km single-mode fiber from a geographically distributed optical network. Low phase noise and distortion absence illustrate its applicability for convergent and reconfigurable optical wireless communications. A potential application relies on the use of PBRC in convergent optical wireless networks to dynamically provide RF carriers as a function of the telecom operator demand and radio propagation environment.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ramon Maia Borges, Ramon Maia Borges, Daniel Mazzer, Daniel Mazzer, Tiago Reis Rufino Marins, Tiago Reis Rufino Marins, Arismar Cerqueira Sodré, Arismar Cerqueira Sodré, } "Photonics-based tunable and broadband radio frequency converter," Optical Engineering 55(3), 031118 (7 December 2015). https://doi.org/10.1117/1.OE.55.3.031118 . Submission:

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