&lt;title&gt;Measurement of broadband fiber-grating transmission spectrum using tunable fiber-grating ring laser&lt;/title&gt;

Jiang, Wang; Liu, Zhiguo; Ge, Chunfeng; Yu, Yabin; Zhang, Yibing; Li, Zhihong; Dong, Xinyong; Chiang, Kin Seng

doi:10.1117/12.318190

Cited by 1 publication

(4 citation statements)

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“…Suppose that the FBG spectrum is in Gaussian form; then the intensity of output light can be expressed as [6]:…”

Section: Experiments and Results Discussionmentioning

confidence: 99%

“…Similar techniques have been applied by Paschen [4] with a single microstrip element, for a bandwidth of more than 25%. Impedance matching at the feed point of the microstrip antenna element using active components has been also proposed to improve the bandwidth [5,6]. In [5], it is shown that utilizing transistors in the matching network, amplification, and the matching function can be combined.…”

Section: Resultsmentioning

confidence: 99%

“…In [5], it is shown that utilizing transistors in the matching network, amplification, and the matching function can be combined. Another is the work by Svitak et al [6], which contains a field effect transistor (FET) amplifier in the matching network, resulting a bandwidth of about 7%. An alternative widely employed broadening technique is to use multiple resonances introducing additional resonant patches.…”

Section: Resultsmentioning

confidence: 99%

“…By using the method of demodulation of a pair of matched FBGs, the vibration signal can be obtained [5,6].…”

Section: Design and Analysismentioning

confidence: 99%

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Temperature compensation for micro‐vibration sensor with fiber gratings

Dong

Huang

Lang

et al. 2004

Micro & Optical Tech Letters

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A technique for temperature compensation in fiber grating vibration sensor is reported. It uses two FBGs as strain-differential sensors and its temperature effects are compensated. By using this technique, the total variation in wavelength difference within the range of 3°t o 45°C is 0.03 nm, 1/14 of the uncompensated fiber Bragg grating. The output waveform is still distortionless at the vibration frequency up to 715 Hz. The factors affecting the sensitivity and the frequency bandwidth are also discussed. ABSTRACT: In this study, a novel technique for bandwidth enhancement of a microstrip antenna with a floating negative inductor matching network is presented. A compensation network consisting of three gallium-arsenide field effect transistors is employed at the input of a microstrip antenna operating at 10 GHz. The performance parameters of the designed microstrip antenna with and without compensation network are compared. The simulation results show that compensation network can improve the bandwidth from 17.21% to 32.67%.

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“…Suppose that the FBG spectrum is in Gaussian form; then the intensity of output light can be expressed as [6]:…”

Section: Experiments and Results Discussionmentioning

confidence: 99%