Signal-to-Noise Performance of Two Analog Photonic Links Using Different Noise Reduction Techniques

Ackerman, E.I.; Betts, G.E.; Burns, W. K.; Campbell, Joe C.; Cox, C.H.; Duan, Ning; Prince, J.L.; Regan, M.D.; Roussell, H.

doi:10.1109/mwsym.2007.380216

Cited by 75 publications

(51 citation statements)

References 9 publications

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“…Therefore, unlike in the MATP and QP biasing schemes of this section, the DC component in the photo-detected signal of MITP biasing, i.e., the term (25), is highly suppressed. Hence, upon using Equations (10) and (11), it can be concluded that an advantage of a suppressed DC component is a low RIN and shot noise [71]. Furthermore, compared to the other N-tupling biasing techniques and the previously discussed OSSB and ODSB modulation, OCS has a better receiver sensitivity [65], [72].…”

Section: A Optical Upconversion Using the Non-linearity Of The Mzmmentioning

confidence: 99%

“…38 [88], [89]. Biasing at MATP also generates photodetected signals at ω R F = (ω L O ± ω I F ), but the achievable optical SNR is higher if biasing is done at MITP than for MATP owing to the former's reduced RIN noise [71]. Hence the MZM performs the function of a mixer along with that of an optical modulator.…”

Section: ) Design Guidelines When Using Optical N-tupling Techniquesmentioning

confidence: 99%

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Millimeter-Wave Radio Over Fiber Optical Upconversion Techniques Relying on Link Nonlinearity

Thomas

El‐Hajjar

Hanzo

2016

IEEE Commun. Surv. Tutorials

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Abstract-A study of advanced upconversion techniques used in radio over fiber (ROF) is provided. With the huge increase in both the number of wireless communication subscribers and the bandwidth required per customer, migrating to higher frequencies, i.e., from lower radio frequency to millimeter-wave carriers, is an essential solution. However, due to the short propagation range of millimeter waves, a large number of radio access points are required for providing reliable coverage, which would increase the infrastructure costs. Hence, the transmission of RF signals between the central (or control) points and radio access points (or remote antenna units) using optical fibers is one of the major access network solutions that have been proposed for future high-bandwidth wireless communication systems. In this paper, we introduce the basics of ROF communication, including optical modulation, the optical channel, and the optical detection techniques. Then we survey the family of advanced optical upconversion techniques that exploit the nonlinearity of the ROF link. Specifically, we describe how optical upconversion can be achieved by exploiting the Mach-Zehnder modulator's nonlinearity, wavelength conversion techniques, or the photodetector's nonlinearity. The wavelength conversion techniques rely on the nonlinearities present in the fiber, in the optical amplifier, or in the electroabsorption modulator. Index Terms-Radio over fiber, direct modulation, external modulation, direct photo-detection, coherent photo-detection, mach zehnder modulator, cross phase modulation, self phase modulation, four wave mixing, stimulated raman scattering, stimulated brillouin scattering, optical frequency modulation, optical phase modulation, optical intensity modulation, optical single side band modulation, optical double side band modulation, optical carrier suppression modulation, sub carrier multiplexing, wavelength division multiplexing, optical N-tupling, optical upconversion, semiconductor optical amplifier, electro-absorption modulator, mach zehnder interferometer, highly nonlinear dispersion shifted fiber, nonlinear optical loop mirror, millimeter wave, 5G, microwave photonics.

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Section: A Optical Upconversion Using the Non-linearity Of The Mzmmentioning

confidence: 99%

Section: ) Design Guidelines When Using Optical N-tupling Techniquesmentioning

confidence: 99%

Millimeter-Wave Radio Over Fiber Optical Upconversion Techniques Relying on Link Nonlinearity

Thomas

El‐Hajjar

Hanzo

2016

IEEE Commun. Surv. Tutorials

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“…In previous RF photonic filtering and link schemes, various techniques using low biasing [38], optical filtering [39], and asymmetric input split ratio of an interferometer [34] have been used. Because these techniques suppress the optical carrier, the optical carrier-induced intensity noise is reduced.…”

Section: Dual-comb Rf Photonic Filtermentioning

confidence: 99%

Rapidly Tunable Dual-Comb RF Photonic Filter for Ultrabroadband RF Spread Spectrum Applications

Kim

Leaird

Weiner

2016

IEEE Trans. Microwave Theory Techn.

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Abstract-We demonstrate a rapidly frequency-tunable radio frequency (RF) filter using microwave photonics technology for ultrawideband RF spread spectrum applications. A pair of electro-optic frequency combs is arranged as a dispersive tapped delay line in a differential detection configuration to implement a programmable finite impulse response RF filter. Our photonic scheme enables both fast frequency tuning on the order of tens of nanoseconds and wide tuning range (>7.5 GHz) with minimal variation of RF gain and passband shape. The low control voltage (ca. 1 V) and the linear relationship between control voltage and passband frequency facilitate agile frequency tuning for processing of signals with time-varying frequency content, while differential detection increases the photocurrent by a factor of two and suppresses common mode intensity noise. We exploit the rapid tunability of the implemented filter to demonstrate dynamic tracking of frequency-hopped and chirped RF signals. An experiment that performs dynamic filtering of an input chirp signal (3.92-GHz center frequency, up-chirped by >2 GHz within 100 ns) obscured by strong broadband noise achieves ∼11-dB signal-to-noise ratio (SNR) improvement. The SNR obtained is in addition to that available from standard matched filtering or pulse compression processing, suggesting strong potential for enhanced resistance against broadband noise jamming.

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“…Photonic links involving conventional electro-optical modulators with multi-GHz bandwidth have achieved noise figures of 10 dB or less at 10 GHz, which corresponds to a better than −164 dBm/Hz sensitivity of an equivalent RF photonic receiver. 54,55 However, these links utilize Watts of optical power, while we made our estimations for 10 mW of power only. Theoretically, the sensitivity of the all-dielectric photonic E-field sensor described here is similar or even better than E-field sensors based on photonics links containing metal, if the optical power used in the dielectric device is comparable with the power sent to the metal containing one.…”

Section: B Sensitivitymentioning

confidence: 99%

Photonic E-field sensor

et al. 2014

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We report on both theoretical and experimental studies of a photonic implementation of the electric (E-) field sensor using a probe made with all-dielectric RF-transparent elements. The geometrical dimensions of the electric field probe can be smaller than the wavelength of the measured electromagnetic field in the material. Our theoretical calculations show that the sensor allows detecting electric fields in a broad frequency range (100 Hz-20 GHz) with sensitivity better than 1 μV/[Hz1/2 m]. We demonstrate the sensor operating at X-band and validate the theoretical predictions.

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Signal-to-Noise Performance of Two Analog Photonic Links Using Different Noise Reduction Techniques

Cited by 75 publications

References 9 publications

Millimeter-Wave Radio Over Fiber Optical Upconversion Techniques Relying on Link Nonlinearity

Millimeter-Wave Radio Over Fiber Optical Upconversion Techniques Relying on Link Nonlinearity

Rapidly Tunable Dual-Comb RF Photonic Filter for Ultrabroadband RF Spread Spectrum Applications

Photonic E-field sensor

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