Optical millimetre-wave generation and transmission experiments for mobile 60 GHz band communications

Braun, Ralf-Peter; Großkopf, G.; Rohde, D.; Schmidt, F.

doi:10.1049/el:19960447

Cited by 80 publications

(16 citation statements)

References 3 publications

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“…Although equation (1) suggests that there are many optical harmonics at the output of the phase modulator, the beating of these harmonics on a photo-detector will only generate a DC electrical signal. This is because all of the harmonics are related in amplitude and phase, which results in the beat products canceling each other out.…”

Section: Light Inmentioning

confidence: 99%

“…Optical sources for generating microwave and mm-wave signals are key components for fiber-supported microwave systems such as broadband wireless access networks, software defined radio, antenna remoting, phased array antenna, optical sensors and radar [1]. These optical sources have been extensively investigated with most work to date focusing on high-frequency signal generation -especially on mm-wave signal generation up to the 60-GHz band.…”

Section: Introductionmentioning

confidence: 99%

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Millimeter-wave carrier generation using an optical phase modulator and an optical notch filter

Yao

Seregelyi

et al. 2004

SPIE Proceedings

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In this paper we propose a robust method for the optical generation of two bands of continuously tunable, microwave and millimeter-wave (mm-wave) signals. The proposed configuration consists of an optical phase modulator (PM), a fiber Bragg grating (FBG) optical notch filter and a tunable, electrical signal source. One band originates from the beating of the two first-order harmonics generated by the phase modulator, while the other band results from the beating of the two second-order harmonics. The phase modulator is driven by a low-frequency, tunable electrical reference source in order to produce the required harmonics. A notch filter is employed to remove the optical fundamental at the output of the phase modulator. It is mathematically shown, and experimentally verified, that the beating of the remaining optical harmonics in a square-law photo-detector can generate only even-orders of the electrical drive signal; all the odd-orders are canceled. In our measurements, the modulator drive signal is tuned from 18.8 GHz to 25 GHz. As a result, the frequency of the measured, electrical output signal is continuously tunable from 37.6 GHz to 50 GHz in the first band and from 75.2 GHz to 100 GHz in the second band.

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Section: Light Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Millimeter-wave carrier generation using an optical phase modulator and an optical notch filter

Yao

Seregelyi

et al. 2004

SPIE Proceedings

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“…Therefore, the generation of two phase-correlated wavelengths is crucial to the optical generation of high-quality electrical signals. In the past, different approaches to implementing these optical signals have been proposed, such as the techniques of automatic frequency control loop [4], optical injection locking [5], optical phase-locked loop (OPLL) [6], and external modulation [7]. The techniques of optical frequency locking, optical injection locking, and OPLL have been used to improve the long-time frequency stability of the generated electrical signal.…”

Section: Introductionmentioning

confidence: 99%

Effects of amplified spontaneous emission noise of optical amplifiers on the phase noise of optically generated electrical signals

Yao

Seregelyi

et al. 2005

SPIE Proceedings

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The applications of optical amplifiers such as erbium-doped fiber amplifiers (EDFAs) and semiconductor optical amplifiers (SOAs) are inevitable in most optical transmission links. These optical amplifiers employed in a transmission link will provide amplification to the optical signals to be transmitted, at the same time the amplifiers will also add amplified spontaneous emission (ASE) noise to the amplified optical signals. In radio-over-fiber systems, optical links are used to distribute high quality radio frequency (RF) signal, microwave signal or millimeter-wave (mm-wave) signal over optical fiber for low loss long-distant transmission. In this paper, the effects of amplified spontaneous emission (ASE) noise of optical amplifiers on the quality of the optically generated electrical signals are theoretically studied.

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“…Applications include antenna remoting [1], microwave fiber-optic links [2], transmission of millimeter-wave radio signals for wireless communications [3], and microwave signal distribution over optical fibers in phased-array antennas [4].…”

Section: Introductionmentioning

confidence: 99%

Frequency multiplication of microwave signals by sideband optical injection locking using a monolithic dual-wavelength DFB laser device

Laperle

Svilans

Poirier

et al. 1999

IEEE Trans. Microwave Theory Techn.

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Frequency multiplication of a microwave signal was achieved by modulating one arm of a dual-wavelength distibutedfeedback (DFB) laser device and injection locking the other arm of the device on one of the modulation sidebands. The dualwavelength laser consists of two DFB lasers integrated with a Y-junction combiner on the same semiconductor substrate, thus making a compact device (L = 500 m). The output of the combiner was allowed to beat on a high-speed photodetector. The resulting microwave signal had a narrow line shape superimposed on a Lorentzian pedestal and was at a multiple of the modulating radio frequency. Three regimes of operation of the laser device were also observed: chaotic, self-pulsating, and heterodyne.

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Optical millimetre-wave generation and transmission experiments for mobile 60 GHz band communications

Cited by 80 publications

References 3 publications

Millimeter-wave carrier generation using an optical phase modulator and an optical notch filter

Millimeter-wave carrier generation using an optical phase modulator and an optical notch filter

Effects of amplified spontaneous emission noise of optical amplifiers on the phase noise of optically generated electrical signals

Frequency multiplication of microwave signals by sideband optical injection locking using a monolithic dual-wavelength DFB laser device

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