Results 171 to 180 of about 120,889 (204)

Long-period fiber grating by electrical discharge

24th European Conference on Optical Communication. ECOC '98 (IEEE Cat. No.98TH8398), 2002
Long-period gratings were manufactured by applying step by step an electric discharge through a standard telecommunication fibre. The induced perturbation was so large that less than 20 steps are necessary to obtain a coupling length.
N. Godbout, X. Daxhelet, A. Maurier, S. Lacroix   +3 more
openaire   +2 more sources

Long-period fiber-grating-based gain equalizers

Optics Letters, 1996
Long-period fiber gratings are used to f latten the gain spectrum of erbium-doped fiber amplifiers. A broadband amplifier with
A M, Vengsarkar, J R, Pedrazzani, J B, Judkins, P J, Lemaire, N S, Bergano, C R, Davidson   +5 more
openaire   +2 more sources

Sensitivity characteristics in nanosized coated long period gratings

Applied Physics Letters, 2006
This work presents an experimental analysis of the sensitivity characteristics to the surrounding refractive index (SRI) in long period gratings coated with polymeric overlay with high refractive index and thickness values ranging in hundreds of nanometers.
Cusano A, Pilla P, IADICICCO, Agostino, CAMPOPIANO, Stefania, Giordano M, Cutolo A.   +5 more
openaire   +7 more sources

Random period arc-induced long-period fiber gratings

Optics & Laser Technology, 2012
Abstract We report the fabrication of arc-induced long-period fiber gratings with strong random variations in the period. Long-period fiber gratings with standard deviations in the period from 8.50 to 36.98 μm were fabricated. The spectral position of the resonant bands is determined by the average period value, being similar to that observed in a ...
A. Martinez-Rios, I. Torres-Gomez, D. Monzon-Hernandez, G. Salceda-Delgado, V.M. Duran-Ramirez, G. Anzueto-Sanchez   +5 more
openaire   +1 more source

Long-period waveguide grating filter with two composite gratings

Proceedings of SPIE, 2006
We demonstrate LPWG in sol-gel material with replica molding and stamping technique. The grating structures were fabricated on top and bottom of the same ridge waveguide and operate at both communication wavelengths 1550 and 1310 nm respectively.
Gyong-Jin Oh, Abderrafia Moujoud, Woo-Soo Kim, Byeong-Soo Bae, Sang-Yung Shin   +4 more
openaire   +1 more source

Recoated temperature-insensitive long-period gratings

Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides: Applications and Fundamentals, 1997
Long-period gratings are now being used as gain equalizers in broadband amplifiers1 and as band-rejection filters in a variety of applications.2 While these devices provide elegant in-fiber solutions to many problems in fiber communications, they can exhibit high temperature sensitivities if sufficient care is not taken in their design. When written in
Anatoli A. Abramov, Arturo Hale, Ashish M. Vengsarkar   +2 more
openaire   +1 more source

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
openaire   +1 more source

Wavelength tunable long-period fiber grating

Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications,, 1999
Wavelength tunable long-period fiber gratings in specially designed optical fibers, which have temperature sensitivity of /spl plusmn/15 nm/100/spl deg/C, have been developed. The temperature sensitivity was three times greater than that in dispersion shifted fiber.
M. Shigehara, T. Enomoto, S. Ishikawa, M. Harumoto, H. Kanamori   +4 more
openaire   +1 more source

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
openaire   +1 more source

Long-period planar waveguide gratings devices

CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671), 2004
Long-period waveguide gratings based on a low-loss negative tone ENR polymer have been fabricated using two different fabrication processes. Both structures exhibit similar transmission characteristics.
H.Y. Tang, H.C. Tsoi, W.H. Wong, E.Y.B. Pun   +3 more
openaire   +1 more source