Results 81 to 90 of about 97 (96)
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SPIE Proceedings, 2012
A low cost, highly accurate and light intensity-independent sensor system for the analysis of fiber Bragg grating signals based on fiber Bragg gratings in the detection unit is presented. The setup is based on two fiber Bragg gratings used in reflection to analyse one sensing fiber Bragg grating.
Jan Koch +2 more
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A low cost, highly accurate and light intensity-independent sensor system for the analysis of fiber Bragg grating signals based on fiber Bragg gratings in the detection unit is presented. The setup is based on two fiber Bragg gratings used in reflection to analyse one sensing fiber Bragg grating.
Jan Koch +2 more
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Ultrashort bragg soliton in a fiber bragg grating
Optics Communications, 2002The propagation of a nonlinear ultrashort pulse in a photonic bandgap structure is investigated by using the finite-difference time-domain method. The simulation results show that an ultrashort pulse near the bandgap edge can propagate through a nonlinear fiber Bragg grating, even if the broadband spectrum of this ultrashort pulse overlaps the whole ...
Hong-Yih Tseng, Sien Chi, Boren Luo
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1999
Publisher Summary This chapter examines different aspects chirped fiber Bragg gratings. Gratings that have a non-uniform period along their length are known as chirped. Chirp in gratings take different forms. The period varies symmetrically, either increasing or decreasing in period around a pitch in the middle of a grating.
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Publisher Summary This chapter examines different aspects chirped fiber Bragg gratings. Gratings that have a non-uniform period along their length are known as chirped. Chirp in gratings take different forms. The period varies symmetrically, either increasing or decreasing in period around a pitch in the middle of a grating.
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Cantor set fiber Bragg grating
Journal of the Optical Society of America A, 2000The theory of fractals has already been applied to many fields in science, such as physics, biology, and chemistry. One of the most commonly used fractals in these applications is the Cantor set. Novel fiber Bragg gratings are proposed that combine the present technology of fiber Bragg gratings with the theory of Cantor sets. The principal goal of this
Vitor M. Schneider +2 more
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Theory of Fiber Bragg Gratings
1999Publisher Summary This chapter reviews the theory of fiber Bragg gratings. A fiber Bragg grating of a constant refractive index modulation and period therefore has an analytical solution. A complex grating is considered to be a concatenation of several small sections, each of constant period and unique refractive index modulation.
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Fiber Bragg grating OSNR monitor
Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing, 2004A novel optical signal-to-noise ratio (OSNR) monitor has been proposed and demonstrated. The device is completely passive, very simple, compact and cost effective. More than 30 dB dynamic range polarization insensitive OSNR monitoring has been achieved.
Sun, F., Lu, Z., Xiao, G., Grover, C.
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Microwave spectroscopy of the fiber Bragg grating
2015 International Conference on Antenna Theory and Techniques (ICATT), 2015In this paper the modulation methods for poly-harmonic microwave signals on optical carrier forming and detecting are demonstrated, especially for applications in fiber-optic sensor systems. The methods of the single-frequency optical signal conversion into the poly-harmonic ones with the difference frequency between the components of SHF, UHF and ...
Morozov, Oleg G. +2 more
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Review of Scientific Instruments, 1997
Since the discovery of photosensitivity in optical fibers there has been great interest in the fabrication of Bragg gratings within the core of a fiber. The ability to inscribe intracore Bragg gratings in these photosensitive fibers has revolutionized the field of telecommunications and optical fiber based sensor technology.
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Since the discovery of photosensitivity in optical fibers there has been great interest in the fabrication of Bragg gratings within the core of a fiber. The ability to inscribe intracore Bragg gratings in these photosensitive fibers has revolutionized the field of telecommunications and optical fiber based sensor technology.
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