Article comprising an optical waveguide containing a fluorescent

Optical waveguides – Optical waveguide sensor

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385123, 385129, 385141, 385142, G02B 600

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active

052590461

ABSTRACT:
Optical waveguide amplifiers and lasers having a novel fluorescent dopant distribution are disclosed. Exemplarily, in a Si-based optical fiber the fluorescent dopant (e.g., Er) has an annular distribution, with the concentration maximum not at the center of the core but typically between the center and the core/cladding interface. The novel waveguides can be relatively insensitive to variations in cut-off wavelength and/or modal distribution of pump power.

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"The Design of Erbium-Doped Fiber Amplifiers", by B. Pedersen et al., Journal of Lightwave Technology, vol. 9, No. 9, Sep. 1991, pp. 1105-1112.
"Three-level Fiber Laser Amplifier: A Theoretical Model", by J. R. Armitage, Applied Optics, vol. 27, No. 23, Dec. 1, 1988, pp. 4831-4836.
"Design Optimization for Efficient Erbium-Doped Fiber Amplifiers", by E. Desurvire et al., Journal of Lightwave Technology, vol. 8, No. 11, Nov. 1990, pp. 1730-1741.
"Modeling of Gain in Erbium-Doped Fiber Amplifiers", by A. A. M. Saleh et al., IEEE Photonics Technology Letters, vol. 2, No. 10, Oct. 1990, pp. 714-717.
"Optical Waveguides with Novel Compositions", by J. B. MacChesney et al., paper WH5, Proceedings of the Optical Fiber Conference 1985, p. 100, (1985).

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