Results 281 to 290 of about 11,192,233 (306)

Long-period fiber gratings written in the microstructure specialty fibers

2013 6th IEEE/International Conference on Advanced Infocomm Technology (ICAIT), 2013
We demonstrate the fabrication of long-period fiber gratings (LPFGs) written by CO2 laser in different micro-structure specialty fibers. The characteristics of grating growth were studied by using the dynamic analysis of laser writing process. It can be believed that the residual stress relaxation, glass structure changes, and frozen of the non ...
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3D printed long period gratings for optical fibers

Optics Letters, 2016
We demonstrate a simple technique for implementing long period grating (LPG) structures by the use of a 3D printer. This Letter shows a way of manipulating the mode coupling within an optical fiber by applying stress through an external 3D printed periodic structure.
Victor Lambin, Iezzi, Jean-Sébastien, Boisvert, Sébastien, Loranger, Raman, Kashyap   +3 more
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Long-period fiber grating inscribed in a tapered fiber

Advanced Photonics Congress, 2012
A long-period fiber grating (LPFG) written in a tapered fiber was proposed and experimentally demonstrated. Strain sensitivity of the proposed LPFG based on a tapered fiber was improved to be -2.99 nm/mϵ.
Min-Seok Yoon, Hyun-Joo Kim, Young-Geun Han   +2 more
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Flexible fabrication of long-period in-fiber gratings

Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178), 1998
We have demonstrated a novel, simple, low-cost and all-fiber interrogation technique for a strain/temperature fiber Bragg sensor using a long-period grating. We show the schematic diagram of the demodulation scheme. The amount of light transmitted by the long-period grating is determined by its wavelength and is therefore proportional to the wavelength
L.A. Everall, R.W. Fallon, J.A.R. Williams, L. Zhang, I. Bennion   +4 more
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Splicer-based long-period fiber gratings

OFC '98. Optical Fiber Communication Conference and Exhibit. Technical Digest. Conference Edition. 1998 OSA Technical Digest Series Vol.2 (IEEE Cat. No.98CH36177), 2002
Summary form only given. Presents a one-step process for the fabrication of efficient, compact long-period gratings. The technique makes use ofa controlled arc to periodically modify an optical fiber by a pair of electrodes. The setup comprises a commercially available splicer whose fiber holding mechanism is replaced by a motorized stage, which allows
S.G. Kosinski, A.M. Vengsarkar
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Magnetomechanically induced long period fiber gratings

AIP Conference Proceedings, 2008
In this work, we report a simple, flexible method to create long period fiber gratings mechanically by controlling the repulsion/attraction force between two magnets that pressing a plate with a periodic array of small glass cylinders to a short length of optical fiber.
Jesus D. Causado-Buelvas, Nelson D. Gomez-Cardona, Pedro Torres, Niklaus Ursus Wetter, Jaime Frejlich   +4 more
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Sensitivity characteristics of long-period fiber gratings

SPIE Proceedings, 2005
Full characterization of the sensitivity of the LPFG is a precursor to practical device design, and knowledge of the sensitivity of the Long-period fiber gratings to the parameters of its physical environment processed is clearly important. We present a theoretical and experimental investigation into the sensitivity of long-period fiber gratings as a ...
Xinzhi Sheng, Ping Miao, Jiye Sheng, Chunzhen Chen   +3 more
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Dipole effect in long-period fiber grating

Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, 2001
An effect of dipole by the UV-induced birefringence was analyzed using a long-period fiber grating. It was approximately 5.6% in UV-induced refractive index change due to the photosensitivity of Ge-related glass defects in our experiment.
M. Shigehara, S. Ishikawa, M. Harumoto, H. Suganuma   +3 more
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Fabrication of long-period fiber gratings with no harmonics

IEEE Photonics Technology Letters, 1999
We demonstrate a method to fabricate spectrally clean long-period gratings in optical fibers. Because the photosensitivity of glass is nonlinear, even a sinusoidal light pattern will generate harmonic gratings, and these higher order gratings can cause unwanted resonances.
V. Grubsky, A. Skorucak, J. Feinberg, D.S. Starodubov   +3 more
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Long-period fiber gratings in WDM applications

Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, 2001
In this presentation we will discuss the properties of long-period gratings and aspects of their fabrication. We will also review devices based on long-period gratings including gain flatteners for fiber amplifiers.
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