Zobrazeno 1 - 10
of 1 059
pro vyhledávání: '"W. W. Morey"'
Autor:
W. W. Morey, G. A. Ball
Publikováno v:
Optics letters. 19(23)
Compressive stress has been used to continuously wavelength tune a single-frequency Bragg grating fiber laser over 32 nm without mode hopping. A master-oscillator/power-amplifier configuration and active noise reduction were implemented to maintain a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7865e350ff580fcaa5936093746a981
https://pubmed.ncbi.nlm.nih.gov/19855715
https://pubmed.ncbi.nlm.nih.gov/19855715
Publikováno v:
Optics letters. 18(1)
The operation of a fiber Bragg grating strain sensor system that uses interferometric determination of strain-induced wavelength shifts and incorporates a reference channel to compensate for random thermal-induced drift in the output is described. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49ba35eca44b3137c437a82f850ae722
https://pubmed.ncbi.nlm.nih.gov/19798354
https://pubmed.ncbi.nlm.nih.gov/19798354
Publikováno v:
Optics letters. 14(15)
Bragg gratings have been produced in germanosilicate optical fibers by exposing the core, through the side of the cladding, to a coherent UV two-beam interference pattern with a wavelength selected to lie in the oxygen-vacancy defect band of germania
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bf4fa5e8e81d9a823c8e0375b503959
https://pubmed.ncbi.nlm.nih.gov/19752980
https://pubmed.ncbi.nlm.nih.gov/19752980
Publikováno v:
Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications.
Properly annealed fiber gratings can be used as sensor transducer elements at temperatures of 400° C over long periods of time without measurable changes. At 650° C, however, a problem was observed with creep or hysteresis of the grating response.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bb8f293e84a94b030cf6d1a6ad98914
https://doi.org/10.1364/pqn.1995.pmc.1
https://doi.org/10.1364/pqn.1995.pmc.1
Publikováno v:
Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications.
A series of blazed, or tilted gratings were fabricated in both depressed-cladding (AT&T Accutether) and matched-cladding (Corning SMF-28) single-mode fibre. In each case, a phase mask was orientated to set the nominal blaze angle (i.e., the complemen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a411783787e052eabdf8092e6f34820
https://doi.org/10.1364/pqn.1995.pmc.2
https://doi.org/10.1364/pqn.1995.pmc.2
Autor:
G. Meltz, W. W. Morey
Publikováno v:
Integrated Photonics Research.
A new method for obtaining lateral confinement and modifying the propagation characteristics of thin film waveguides is described. It is based on optically-induced changes in the refractive index of germania-doped silica. It is an extension of previo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04f8979f2ed49f77e6b05fae139718dd
https://doi.org/10.1364/ipr.1994.pd6
https://doi.org/10.1364/ipr.1994.pd6
Publikováno v:
SPIE Proceedings.
We describe results obtained with a two-channel fiber optic grating sensor system using interferometric determination of strain-induced Bragg-wavelength shifts. The system provides high resolution to quasi-static and dynamic strain perturbations of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57f3943223a00cd33a8a0510e7a73e1a
https://doi.org/10.1117/12.141334
https://doi.org/10.1117/12.141334
Autor:
W. W. Morey, Benxian Chen, Mohamed H. Maher, Edward G. Nawy, John Dennis Prohaska, Elias Snitzer
Publikováno v:
SPIE Proceedings.
Fiber optic Bragg gratings were used and evaluated as strain gauges. An expression describing the relationship of the strain to relative spectral shift was derived from the phase index of refraction of the waveguide and it was experimentally verified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adf3572ada7c69e0bfc1369305074e53
https://doi.org/10.1117/12.141330
https://doi.org/10.1117/12.141330
Autor:
G. A. Ball, W. W. Morey
Publikováno v:
Digest of Conference on Optical Fiber Communication.
Single-mode erbium fiber lasers are currently a strong candidate for communication sources. To date narrow-linewidth, wavelength tunable, continuous wave, linear, erbium fiber lasers, which utilize intracore Bragg reflectors, have been shown to yield
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c58d905d1b997d8d5ad9d43f5946eb5
https://doi.org/10.1364/ofc.1992.wa3
https://doi.org/10.1364/ofc.1992.wa3
Autor:
G. Meltz, W. W. Morey
Publikováno v:
Digest of Conference on Optical Fiber Communication.
Photobleachable defects are often formed in gemnanosilicate glasses during preform fabrication and fiber drawing. Rapid cooling, stress gradients, and exposure to a chemical reducing agent, such as hydrogen, or an oxygen deficient atmosphere increase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19b4842b8cde26d490c0a764e8426915
https://doi.org/10.1364/ofc.1992.wa1
https://doi.org/10.1364/ofc.1992.wa1