A Phase-Modulation I/Q-Demodulation Microwave-to-Digital Photonic Link

Clark, Thomas R.; O'Connor, S.R.; Dennis, Michael L.

doi:10.1109/tmtt.2010.2076971

Cited by 114 publications

(38 citation statements)

References 33 publications

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“…As even lower noise figure photonic links are developed with improved E/O and O/E conversion devices, the need for any electronic amplification for receive-mode antenna operation can be eliminated. The spurious-free dynamic range (SFDR) is equally important and photonic links with SFDR >125 dB-Hz 2/3 have been demonstrated [2]. These hero link results are indeed promising, but further emphasis is required in compact ruggedized packaging and link cost reduction for widespread deployment of microwave photonics into RF systems to occur.…”

Section: Rf Photonics Link Technologiesmentioning

confidence: 99%

RF photonics: Status, challenges and opportunities

Pappert

2011

2011 IEEE Avionics, Fiber- Optics and Photonics Technology Conference

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Section: Rf Photonics Link Technologiesmentioning

confidence: 99%

RF photonics: Status, challenges and opportunities

Pappert

2011

2011 IEEE Avionics, Fiber- Optics and Photonics Technology Conference

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“…1 and 2, there have been numerous demonstrations of high-G, low-noise photonic links. A variety of architectures have been employed to that end, including direct intensity modulation of lasers with direct detection [6], external differential intensity modulation with balanced detection [8], [9], [11], [12], external modulation with low-biased Mach-Zehnder modulators and direct detection [10], [12]- [14], [16], cascaded external modulators [15] and coherent receivers [17]. Two of these approaches are demonstrated in Section III along with phase modulation.…”

Section: Demonstrated Capabilitiesmentioning

confidence: 99%

Fiber-optic links with all-photonic RF gain and low RF noise figure

Urick

McKinney

Diehl

et al. 2011

2011 IEEE MTT-S International Microwave Symposium

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“…The distortion penalty of the IF fiber-remoting link could be reduced by using feedback or feedforward compensation or by using a linearized phase modulated analog fiber link [5,6]. The noise penalty of the IMDD link can be improved by choosing a lower noise figure pre-amplifier and by increasing the unmodulated optical power until the laser RIN limit is reached [7].…”

mentioning

confidence: 99%

Fully fiber-remoted 80 GHz wireless communication with multi-subcarrier 16-QAM

McKenna

Nanzer

Dennis

et al. 2012

IEEE Photonics Conference 2012

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The experimental results of a fully fiber-remoted millimeter-wave wireless link are presented. A 3 Gb/s rate with a BER of 10 -3 for a received power of −45 dBm/subcarrier is achieved using 3 16-QAM subcarriers.The millimeter-wave (mm-wave) region of the electromagnetic spectrum has been gaining interest in recent years due to the allocation by the Federal Communications Commission of frequency bands extending up to 100 GHz for commercial use. The large channel bandwidths available combined with the relatively low cost of system deployment make these systems attractive for metropolitan Ethernet backbone architectures and wireless backhaul of 3G and 4G cell traffic, where fiber optical connections may not be practical [1,2]. The 80 GHz band is particularly attractive for outdoor communications across kilometers of distance because it avoids the O 2 and H 2 O atmospheric absorption lines and features 0.2 dB/km average atmospheric attenuation [2]. This is in contrast to the 60 GHz band with nearly 20 dB/km attenuation which is useful for WPAN applications but not for extended range systems [3]. In this paper we present experimental results of an 80 GHz communication system utilizing photonic upconversion for the transmitter and fiber-remoting of both the transmitter and receiver. Figure 1 shows the transmitter and receiver with the fiber-remoted sections outlined. In Figure 1, the 80 GHz carrier is generated using a semiconductor external-cavity laser (ECL, λ=1546.031nm) with 100 kHz linewidth and an intensity modulator biased at a null driven by a 40 GHz single-tone RF source, which produces sidebands with 80 GHz separation. The optical signal is split, and the lower sideband is encoded with 250 MSym/s 16-QAM data on 3 subcarriers by driving an intensity modulator biased at quadrature. The two sidebands are then recombined before mixing on a PIN photodiode (PD, 50 GHz 1dB BW) to produce the data bearing 80 GHz signal. The Arbitrary Waveform Generator (AWG) is programmed to produce an RF data signal consisting of 3 subcarriers at 1.7, 2, and 2.3 GHz center frequencies for a total data rate of 3 Gb/s. After the PD, the 80 GHz signal is amplified by a highpower amplifier (HPA, G=24dB, P 1dB =15dBm), before radiating from a 24 dBi horn antenna.The wireless signal is received by an identical 24 dBi antenna placed 0.5 m from the transmit antenna. The received signal is amplified by a low-noise amplifier (LNA, G=21dB) before mixing with a 63 GHz local oscillator (LO) signal. The LO signal is photonically generated using a second semiconductor ECL (λ=1545.355nm) and an intensity modulator biased at a null to generate 2 sidebands spaced 63 GHz apart which are mixed on a PIN PD (50 GHz 1dB BW), and the 63 GHz tone is amplified to drive the LO port of the mixer. For full fiber-remoting, the intermediate frequency (IF) signal from the mixer is passed to a Ku-band intensity-modulated direct-detection (IMDD) link before it is digitized and demodulated in real-time using an oscilloscope (20 GHz BW, 50 GS/s). Although two lasers w...

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A Phase-Modulation I/Q-Demodulation Microwave-to-Digital Photonic Link

Cited by 114 publications

References 33 publications

RF photonics: Status, challenges and opportunities

RF photonics: Status, challenges and opportunities

Fiber-optic links with all-photonic RF gain and low RF noise figure

Fully fiber-remoted 80 GHz wireless communication with multi-subcarrier 16-QAM

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