Simplified Formula of Bending Loss for Optical Fiber Sensors

Tsao, Shyh‐Lin; Cheng, William C.

doi:10.1080/01468030290087723

Cited by 27 publications

(21 citation statements)

References 16 publications

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“…Thus, the mean radius r is mainly an influencing factor of the transfer function. For small r we can obtain a large transfer function; whereas, when the bending radius of fiber is lower than 10 mm [11] the optical power loss is very serious. Thus, to design an optimal mean radius r is very important.…”

Section: Design Of Phase Modulatormentioning

confidence: 94%

Design of a piezoelectric transducer cylindrical phase modulator for simulating acoustic emission signals

Hang

2007

Front. Mech. Eng. China

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To conveniently carry out the pipeline leak experiment in a laboratory, leak acoustic signals are simulated by using the converse piezoelectric effect of a piezoelectric transducer (PZT) cylindrical phase modulator. On the basis of the piezoelectric equations and electromechanical equivalence principle, the transfer function of a PZT cylindrical phase modulator is delivered. A PZT cylindrical phase modulator is designed, and the numerical simulation is conducted. Results prove that the PZT cylindrical phase modulator can effectively simulate leak acoustic emission signals when the frequency is lower than 25 KHz.

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Section: Design Of Phase Modulatormentioning

confidence: 94%

Design of a piezoelectric transducer cylindrical phase modulator for simulating acoustic emission signals

Hang

2007

Front. Mech. Eng. China

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“…Tsao and Cheng [24] examined bend loss of optical fibre sensors for various bend radii, number of turns, extra bend angle and wavelength. They concluded that the losses from bending effects depend on the wavelength, bending radii and bending angle exponentially and number of turn linearly [24].…”

Section: Loss Mechanism For Optical Fibresmentioning

confidence: 99%

Transmission performance of fibre-optic bundle for solar lighting

Kandilli

Turkoglu

Ülgen

2009

Int. J. Energy Res.

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SUMMARYTransmission of concentrated solar energy via fibre-optic bundle (FOB) has a great potential for numerous applications. In this paper, it is aimed to determine the transmission performance of a constructed plastical FOB-based solar lighting system. The experiments and measurements are carried out by means of a metal halide source simulating the spectral distribution of solar radiation in visible range of wavelength. Optical efficiency, luminous efficacy, attenuation, spectral characterization under different bending conditions, integration of optical filters and FOB were investigated. The effects of the optical filter proposed are discussed for a solar lighting system. Spectral and colour properties of FOB and the optical filter are also presented.

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“…The block diagram and signal flow of our implemented fiber-optic bending loss measurement system is shown in Figure 1 [3]. The optical light carrier is sinusoidally modulated to 21.5 kHz at the pay-off terminal on the fiber coating machine.…”

Section: On-line Fiber-optic Characteristics Monitoring System Descrimentioning

confidence: 99%

“…We experimentally built a filter based on a second-order active band-pass filter design with narrow pass-band and broad dynamic range to filter out the desired signal and reject any noises outside the pass-band. The instrumental amplifier is used to compensate for the attenuation of the free-space optical coupling devices [3]. The theoretical model of the optical receiver circuit is derived in the following section.…”

Section: On-line Fiber-optic Characteristics Monitoring System Descrimentioning

confidence: 99%

“…However, little reports related fiber sensor has been disclosed for fiber coating automatic on-line monitoring, because fiber automatic on-line monitoring is very useful for mass production. We have reported a simplified formulation of bending loss for building up an on-line fiber-optic characteristics monitoring system, recently [3]. Such a system can coat the jacket with polymer along a 25 km fiber spool.…”

Section: Introductionmentioning

confidence: 99%

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An optical receiver circuit for on‐line fiber‐optic characteristics monitoring

Cheng

Tsao

2002

Micro & Optical Tech Letters

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A low‐cost optical receiver circuit, which includes a photodiode preamplifier, an active band‐pass filter, and an instrumental amplifier is experimentally achieved. Using the proposed circuit for measurement and on‐line automatic monitoring in this paper, the efficiency of fiber‐optic characteristics monitoring can be enhanced and on‐line noise interference can be suppressed. The transfer functions and frequency response of the optical receiver are derived. The signal‐to‐noise ratio of the on‐line fiber‐optic characteristics monitoring system can be improved using this low‐cost optical receiver. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 354–357, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10605

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Simplified Formula of Bending Loss for Optical Fiber Sensors

Cited by 27 publications

References 16 publications

Design of a piezoelectric transducer cylindrical phase modulator for simulating acoustic emission signals

Design of a piezoelectric transducer cylindrical phase modulator for simulating acoustic emission signals

Transmission performance of fibre-optic bundle for solar lighting

An optical receiver circuit for on‐line fiber‐optic characteristics monitoring

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