Journal ArticleDOI
Optical millimeter-wave generation or up-conversion using external modulators
TLDR
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.Abstract:
We have experimentally compared the performances of optical millimeter-wave generation or up-conversion using external modulators based on different modulation schemes. The generated or up-converted optical millimeter wave using the optical carrier suppression (OCS) modulation scheme shows the highest receiver sensitivity, highest spectral efficiency, and smallest power penalty over long-distance delivery. Moreover, the OCS modulation scheme has a simple configuration and low-frequency bandwidth requirement for both electrical and optical components. Employing an OCS modulation scheme, 16-channel dense wavelength-division multiplexing signals at 2.5-Gb/s per channel have been up-converted to a 40-GHz carrier simultaneously.read more
Citations
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Journal Article
Microwave Photonics
TL;DR: In this paper, techniques developed in the last few years in microwave photonics are reviewed with an emphasis on the systems architectures for photonic generation and processing of microwave signals, photonic true-time delay beamforming, radio-over-fiber systems, and photonic analog-to-digital conversion.
Proceedings Article
Microwave photonics
TL;DR: In this paper, microwave photonics techniques developed in the past few years will be reviewed, with an emphasis on system architectures for microwave applications.
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
A full-duplex radio-over-fiber system based on optical carrier suppression and reuse
TL;DR: In this paper, a full-duplex radio-over-fiber system using a single light source at the central station (CS) was demonstrated, where the optical carrier suppression modulation scheme was employed to generate 40GHz optical millimeter wave and up-convert the baseband signal simultaneously at CS for downlink transmission while the same optical carrier was reused at base station for uplink connection.
Journal ArticleDOI
Fiber Dispersion Influence on Transmission of the Optical Millimeter-Waves Generated Using LN-MZM Intensity Modulation
TL;DR: In this paper, the transmission performance of the optical mm-wave generated using intensity modulation via a Mach-Zehnder modulator, with the double and single sidebands (DSB and SSB) and optical carrier suppression (OCS) schemes, was theoretically investigated.
References
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Journal ArticleDOI
Overcoming chromatic-dispersion effects in fiber-wireless systems incorporating external modulators
G.H. Smith,Dalma Novak,Z. Ahmed +2 more
TL;DR: In this article, the effects of fiber chromatic dispersion in fiber-wireless systems incorporating external modulators were investigated and the achievable link distance can be increased by varying the chirp parameter of the modulator to give large negative chirps using a dual-electrode Mach-Zehnder modulator biased at quadrature.
Journal ArticleDOI
Chromatic dispersion in fiber-optic microwave and millimeter-wave links
TL;DR: In this article, the influence of chromatic fiber-dispersion on the transmission distance of fiber-optic microwave and millimeter-wave links is analyzed and discussed, and it is shown that dispersion significantly limits transmission distance in intensity modulated direct detection links operating in the above 20 GHz frequency region by inducing a carrier to noise penalty on the transmitted signal.
Journal ArticleDOI
Transmission improvement in fiber wireless links using fiber Bragg gratings
TL;DR: In this paper, the authors demonstrate a simple, passive technique for significant improvement of transmission performance in fiber wireless links through the application of a narrow-band fiber Bragg grating, which is used to optimize the optical modulation depth in the transmitted signal by reducing the power of the optical carrier.
Journal ArticleDOI
Seamless integration of an 8/spl times/2.5 Gb/s WDM-PON and radio-over-fiber using all-optical up-conversion based on Raman-assisted FWM
TL;DR: In this paper, the seamless integration of an 8/spl times/2.5 Gb/s passive optical network and radio-over-fiber access system using all-optical up-conversion based on Raman-assisted four-wave mixing in a high-nonlinear fiber is demonstrated.
Journal ArticleDOI
Efficient microwave frequency conversion using photonic link signal mixing
TL;DR: 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.
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A full-duplex radio-over-fiber system based on optical carrier suppression and reuse
Overcoming chromatic-dispersion effects in fiber-wireless systems incorporating external modulators
G.H. Smith,Dalma Novak,Z. Ahmed +2 more