25-GHz channel spacing dwdm multiplexing using an arrayed waveguide grating for 60-GHz band radio-on-fiber systems

Toda, Hiroyuki; Yamashita, Tsukasa; Kuri, Toshiaki; Kitayama, K.

doi:10.1109/mwp.2003.1422901

Cited by 24 publications

(10 citation statements)

References 5 publications

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“…To improve the link performance, the optical power of the signals can be increased by using a high power optical source or an optical amplifier; however, this may lead to increased intermodulation distortions at the receiver or even damage of the receiver due to a too large optical power incident on the optical detector [21]. A few techniques have been proposed to improve the modulation efficiency of these signals including Brillouin scattering [21,22], external optical filtering [23,24], and optical attenuation [25]. Fig.…”

Section: Improving Conversion Efficiencymentioning

confidence: 99%

Radio-over-fiber systems

et al. 2009

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Section: Improving Conversion Efficiencymentioning

confidence: 99%

Radio-over-fiber systems

et al. 2009

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“…To improve the link performance, the optical power of the signals can be increased by using a high power optical source or an optical amplifier; however, this may lead to increased intermodulation distortions at the receiver or even damage of the receiver due to too large an optical power incident on the optical detector [14]. A few techniques have been proposed to improve the modulation efficiency of these signals including Brillouin scattering [14,15], external optical filtering [16,17], and optical attenuation [18]. Fig.…”

Section: Improving Optical Modulation Depth For Optically Modulated Mmentioning

confidence: 99%

“…However this approach may lead to increased IMDs at the receiver or even damage the receiver due to too large an optical power incident on the optical detector [14]. Alternatively, a few techniques have also been proposed to improve the low mm-wave modulation efficiency, including Brillouin scattering [14,15] and external optical filtering [16][17][18]. Apart from low modulation efficiency, the optical distribution of mmwave radio signals is also susceptible to fiber chromatic dispersion that severely limits the transmission distance [19,20].…”

Section: Introductionmentioning

confidence: 99%

Optical impairments mitigation in millimeter-wave fiber-wireless systems

Lim

Nirmalathas

Novak

et al. 2008

Optical Transmission, Switching, and Subsystems VI

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Hybrid fiber-wireless networks for fixed wireless access operating in the millimeter-wave wave (mm-wave) frequency region have been actively pursued to provide untethered connectivity to ultra-high bandwidth communications. The architecture of such radio networks requires a large number of antenna base stations with high throughput to be deployed to maximize the geographical coverage with main switching and routing functionalities located in a centralized location. The transportation of mm-wave wireless signals within the hybrid network is subject to low opto-electronic conversion efficiency, fiber chromatic dispersion and also signal degradation due to nonlinearity along the link. One of the major technical challenges in implementing such networks lies in the mitigation of the various optical impairments that the wireless signals experience within the hybrid network. In this paper, we present an overview of the different techniques and schemes to overcome some of the signal impairments in transporting mm-wave radio signals over optical networks.

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“…This technique is useful in systems where the modulation efficiency is limited and the overall optical power cannot be increased due to the danger of saturating the photodetector. Carrier reduction has so far been implemented via Brillouin scattering [4,5], use of dual-parallel Mach-Zehnder modulators [6] and external optical filtering using silica delay lines [7], Fabry-Perot structures [8], fiber Bragg gratings [9,10] and arrayed waveguide gratings (AWG) [11].…”

Section: Introductionmentioning

confidence: 99%

Variable carrier reduction in radio-over-fiber systems for increased modulation efficiency using a Si_3N_4 tunable extinction ratio ring resonator

Perentos¹,

Cuesta-Soto²,

Rodrigo³

et al. 2012

Opt. Express

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Abstract:Variable optical carrier reduction via the use of a Si 3 N 4 ring resonator notch filter with tunable extinction ratio is demonstrated in a 10 GHz radio-over-fiber system for improving the modulation efficiency. The extinction of the filter notch is tuned with micro-heaters, by setting the Mach-Zehnder coupler of the ring. Experimental results showing a modulation depth improvement of up to 20 dB are provided.

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25-GHz channel spacing dwdm multiplexing using an arrayed waveguide grating for 60-GHz band radio-on-fiber systems

Cited by 24 publications

References 5 publications

Radio-over-fiber systems

Radio-over-fiber systems

Optical impairments mitigation in millimeter-wave fiber-wireless systems

Variable carrier reduction in radio-over-fiber systems for increased modulation efficiency using a Si_3N_4 tunable extinction ratio ring resonator

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