Simultaneously Realizing PM-IM Conversion and Efficiency Improvement of Fiber-Optic Links Using FBG

Chen, B.; Zheng, Shilie; Zhang, X. M.; Jin, Xiaofeng; Chi, Hao

doi:10.1163/156939309787604472

Cited by 15 publications

(12 citation statements)

References 18 publications

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“…Furthermore, because of the wide wavelength tunable range of multi-wavelength fiber laser, the present technique can measure multi-gas simultaneously even if the absorption peaks of the gases are relatively far away from each other. For a multi-gas measurement, the wavelengths of the fiber laser can be easily tuned to the absorption peaks of the target gases by employing the fiber Bragg gratings (FBGs) [17,18]. Gas simultaneous detection is required on diverse occasions, e.g., in steel industry, the concentrations of CO and CO 2 in exhaust are directly related to the quality of products.…”

Section: Introductionmentioning

confidence: 99%

Detection of Gas Concentration by Correlation Spectroscopy Using a Multi-Wavelength Fiber Laser

Wang¹,

Somesfalean²,

Mei³

et al. 2011

PIER

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Abstract-A correlation spectroscopy (COSPEC) based on a multiwavelength fiber laser is first proposed for the detection of gas concentration. The lasing wavelengths are selected to match several characteristic absorption peaks of the gas under test, and the gas concentration is easily measured by correlating it with the reference gas. The present method is immune from the instability of the light source and the influence of other gases. The concentration measurement of C 2 H 2 is demonstrated in the experiment in its nearinfrared dominant absorption region. The technique has prospects for simultaneous detection of multiple gases, and the measurement of mixed gases of C 2 H 2 and CO 2 is also analyzed.

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Section: Introductionmentioning

confidence: 99%

Detection of Gas Concentration by Correlation Spectroscopy Using a Multi-Wavelength Fiber Laser

Wang¹,

Somesfalean²,

Mei³

et al. 2011

PIER

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“…However, the π-phase-difference of the AE1st-order sidebands after phase modulation process will cancel each other while beating with optical carrier at a photodetector (PD); therefore, an effective and stable conversion of phase modulation (PM) to intensity modulation (IM) is indispensable in phase modulated RoF links. A number of schemes have been proposed including dispersive fiber [5], fiber grating [6], Brillouin amplification [7], and interferometer detection [8], etc. Amongst, utilizing a length of dispersive fiber is the easiest way to implement.…”

Section: Introductionmentioning

confidence: 99%

Frequency response equalization in phase modulated RoF systems using optical carrier Brillouin processing

Zheng

Chi

et al. 2011

Front. Optoelectron. China

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A novel method is demonstrated to tunably compensate dispersion effect in phase modulated radio over fiber (RoF) links using an optical carrier Brillouin processing technique, which is based on stimulated Brillouin scattering (SBS) to control the phase shift of optical carrier in the modulated lightwave signal. Since this phase shift can be dynamically tuned, frequency response can be tunably improved. Both simulation and experimental results show that a uniform frequency response ranging from 1-12 GHz with a fluctuation of less than AE1 dB can be obtained by an optimal phase shift on the optical carrier.

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“…12 This allows direct detection, rather then coherent detection, to be used simplifying the receiver design and implementation. However, common-mode noise cannot easily be suppressed with these approaches.…”

Section: Introductionmentioning

confidence: 99%

Phase modulated radio-over-fiber link with electro-optic downconversion using a delay-line interferometer

Murphy

Pagán

2011

SPIE Proceedings

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We describe and experimentally demonstrate a technique for transmitting microwave signals over an optical fiber and downconverting them to an intermediate frequency at the receiver. The system uses two electrooptic phase modulators, one in the transmitter and the other in the receiver, to optically heterodyne the microwave input signal with a microwave local oscillator. The phase modulated signal is detected at the receiver using an optical delay-line interferometer and a pair of balanced photodectectors. This simple configuration allows downconversion and common-mode noise suppression to be simultaneously realized with relatively high RF-to-IF gain.

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Simultaneously Realizing PM-IM Conversion and Efficiency Improvement of Fiber-Optic Links Using FBG

Cited by 15 publications

References 18 publications

Detection of Gas Concentration by Correlation Spectroscopy Using a Multi-Wavelength Fiber Laser

Detection of Gas Concentration by Correlation Spectroscopy Using a Multi-Wavelength Fiber Laser

Frequency response equalization in phase modulated RoF systems using optical carrier Brillouin processing

Phase modulated radio-over-fiber link with electro-optic downconversion using a delay-line interferometer

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