Journal ArticleDOI
Efficient microwave frequency conversion using photonic link signal mixing
TLDR
In this article, an efficient, high-dynamic range microwave mixer implemented using an analog fiber-optic link with an overdriven optical modulator to produce the local oscillator requirement has been demonstrated and analyzed.Abstract:
An efficient, high-dynamic range microwave mixer implemented using an analog fiber-optic link with an overdriven optical modulator to produce the local oscillator requirement has been demonstrated and analyzed. This approach is compared with the heterodyned lasers approach to generating the local oscillator requirement and it is shown that increased conversion efficiency and more frequency and phase stable upconverted or downconverted signals are obtainable. Aside from RF link loss, which can be compensated with preamplification, a conversion loss below 5 dB has been demonstrated out to 10 GHz.read more
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Optical millimeter-wave generation or up-conversion using external modulators
TL;DR: In this article, the authors compared the performances of optical millimeter-wave generation or up-conversion using external modulators based on different modulation schemes and found that the OCS modulation scheme has the highest receiver sensitivity, highest spectral efficiency and smallest power penalty over long-distance delivery.
Journal ArticleDOI
Key Enabling Technologies for Optical–Wireless Networks: Optical Millimeter-Wave Generation, Wavelength Reuse, and Architecture
TL;DR: Several key enabling technologies for hybrid optical-wireless access networks are described, including optical millimeter-wave (mm-wave) generation, upconversion, and transmission in a downlink direction, and full-duplex operation based on wavelength reuse by using a centralized light source in an uplink direction.
Journal ArticleDOI
Cost-Effective Optical Millimeter Technologies and Field Demonstrations for Very High Throughput Wireless-Over-Fiber Access Systems
Jianjun Yu,Gee-Kung Chang,Zhensheng Jia,Arshad Chowdhury,Ming-Fang Huang,Hung-Chang Chien,Yu-Ting Hsueh,Wei Jian,Cheng Liu,Ze Dong +9 more
TL;DR: In this article, several key enabling technologies for very high throughput wireless-over-fiber networks are reviewed, including photonic mm-wave generation based on external modulation or nonlinear effects, spectrum-efficient multicarrier orthogonal frequency-division multiplexing and single-carrier multilevel signal modulation.
Journal ArticleDOI
Microwave Photonic Downconverter With High Conversion Efficiency
TL;DR: In this article, a high conversion efficiency microwave photonic frequency downconverter based on an integrated dual-parallel Mach Zehnder modulator (DPMZM) and optical phase shifter configuration is presented.
Journal ArticleDOI
High Dynamic Range Microwave Photonic Links for RF Signal Transport and RF-IF Conversion
A. Karim,J. Devenport +1 more
TL;DR: In this paper, two different techniques were used to extend the dynamic range of analog optical links operating at microwave frequencies by adjusting the bias point of an external Mach-Zehnder intensity modulator.
References
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Journal ArticleDOI
Microwave-optical mixing in LiNbO/sub 3/ modulators
TL;DR: In this article, an investigation study of microwave-optical mixing in different configurations of LiNbO/sub 3/Mach-Zehnder interferometric modulators is presented.
Journal ArticleDOI
High spurious free dynamic range fibre link using a semiconductor electroabsorption modulator
TL;DR: In this article, a 1.32 mu m sub-octave analogue fiber optic link with a measured spurious free dynamic range of 123 dBHz/sup 4/5/ has been demonstrated at an average detector photocurrent of 0.25 mA.