Browsing by Subject "Optical fibers"
Now showing items 1-11 of 11
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Article
Determination of Erbium Distribution in Optical Fibers Using Confocal Optical Microscopy
(1994)Confocal fluorescence microscopy has been used to detect the 565 nm wavelength fluorescence generated from Er+3 ions present in erbium doped optical fibers, thereby enabling the concentration profile of these ions in the ...
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Article
Effects of Ge concentration, boron co-doping, and hydrogenation on fiber bragg grating characteristics
(2005)In this paper, we compare photosensitivity, refractive-index modulation depth, spectral bandwidth, and excess loss through the inscription of fiber Bragg gratings in unloaded and hydrogen-loaded fibers with low- or ...
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Conference Object
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Conference Object
Femtosecond laser inscription of Bragg and complex gratings in coated and encapsulated silica and low-loss polymer optical fibers
(SPIE, 2015)The development of wavelength filters, such as Bragg and superstructure gratings in glass and polymer optical fibers, using a femtosecond laser is reported. By using a femtosecond laser operating in the green, which offers ...
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Conference Object
Fiber laser sensor array
(Publ by Society of Photo-Optical Instrumentation Engineers, 1993)An intracore Bragg grating and a broadband reflector are used as cavity end mirrors of a tunable Erbium-doped fiber laser where the Bragg grating serves the dual purpose of the tuning element and the sensor. This fiber ...
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Article
Novel and Improved Methods of Writing Bragg Gratings with Phase Masks
(1995)The authors demonstrate the importance of spatial coherence of the writing beam for inscribing Bragg gratings with a phase mask. Bragg gratings were written using a normal excimer laser with the fiber placed at various ...
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Article
Pulse collisions and polarisation conversion for optical fibres
(1994)Axisymmetric fibres support linearly and circularly polarised sech pulses and also elliptically polarised pulses having more complicated profile. Collisions between any two such pulses are studied numerically. Large collision ...
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Conference Object
Study of optical fiber structures using atomic force microscopy and scanning near-field optical microscopy
(1996)Atomic force microscopy (AFM) and scanning near-field optical microscopy (SNOM) were used to study optical fiber structures. The refractive index profile of fiber was disclosed by surface topography of etched fiber endface ...
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Superimposed multiple Bragg gratings
(1994)The authors demonstrate the inscription of seven Bragg gratings at the same location on a photosensitive fibre. These superimposed Bragg gratings were written over a 60nm span in the region of 1530nm with reflectivities ...
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