Optically injection-locked self-oscillating optoelectronic mixers based on InP-InGaAs HPTs for radio-on-fiber applications

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
IEEE Photonics Technology Letters (Impact Factor: 2.04). 12/2005; DOI:10.1109/LPT.2005.857624
Source: IEEE Xplore

ABSTRACT We demonstrate an optically injection-locked self-oscillating optoelectronic mixer (OIL-SOM) for radio-on-fiber downlink applications. OIL-SOM is based on a monolithic oscillator containing an InP-InGaAs heterojunction phototransistor (HPT). The oscillator is OIL by remotely delivered optical local oscillator (LO) signals, and provides low phase-noise and high-power electrical LO signals. In addition, the HPT in this oscillator can simultaneously perform optoelectronic mixing, in which optically transmitted intermediate frequency signals are up-converted to the desired radio-frequency band with high conversion efficiency. With these, OIL-SOM can make base station architecture simple in radio-on-fiber downlink systems.

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    ABSTRACT: We demonstrate 60-GHz band bidirectional radio-on-fiber (RoF) links based on InP-InGaAs heterojunction phototransistor (HPT) optoelectronic mixers. They employ remote up/down conversion scheme with optical local oscillator signals distributed from the central office and intermediate frequency (IF) fiber transmission for both up- and down-links. Since frequency up/down conversions and photodetection are carried out by a single HPT optoelectronic mixer, base station architecture is greatly simplified. In order to validate its feasibility, both up- and down-link RoF transmissions of 16 quadrature amplitude modulator data are successfully demonstrated at 60-GHz band using 1.25-GHz IF for down-link and 2.0-GHz IF for up-link.
    IEEE Photonics Technology Letters 01/2006; · 2.04 Impact Factor
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    ABSTRACT: A 30 GHz hybrid-type optically injection-locked self-oscillating optoelectronic mixer is implemented with a high-performance InP/InGaAs heterojunction photo-transistor. Using this mixer as a harmonic up-converter, 60 GHz radio-on-fiber downlink transmission of 20 Mbps 16QAM data is successfully demonstrated. The link performance is uniform over a wide range of optical LO powers.
    Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference. OFC 2006; 04/2006
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    ABSTRACT: Radio over fiber (RoF) technology is proposed solution for the reducing cost and providing highly reliable communication services. The system is very cost-effective solution by localization of signal processing in central station and also uses a simple base station. In this paper, two configurations of RoF system were presented. First, the intermediate frequency (IF) frequencies are upconverted to radio frequency (RF) at the central station and the RF are transmitted over single mode fiber directly at the radio carrier frequency. In the second configuration, the IF are transmitted over single mode fiber and converted to the original RF at the optical receiver. This report is focusing on the RoF optical frontend receiver configuration at the base station or also known as optical heterodyne receiver that employing an optoelectronic mixer. In this configuration, the receiver is performing photodetection and frequency conversion simultaneously. Thorough review and comparison of the previous works on the optoelectronic mixer and frequency conversion for up to millimeter-wave band will presented. Finally, the theoretical analysis and the harmonic balance modeling of the proposed optical front-end receiver and frequency up conversion system will be discussed.
    Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on; 01/2009


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