Integrated optics coupling element comprising a grating...

Details Integrated optics coupling element comprising a grating... Integrated optics coupling element comprising a grating...

2007-02-20

2007-02-20

Healy, Brian (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S001000, C385S004000, C385S010000, C385S129000, C385S130000, C385S132000

Reexamination Certificate

active

10538139

ABSTRACT:
The invention relates to an integrated optics coupling element that includes a substrate, an optical guide core, an optical cladding independent of the core and surrounding at least one portion of the core in a zone of the substrate called the zone of interaction. The cladding has at least in the zone of interaction a modulation of its structure so as to form a grating. The refractive index of the cladding is different from the refractive index of the substrate and lower than the refractive index of the core at least in the part of the cladding next to the core in the zone of interaction.Embodiments of the invention may be used to make gain flatteners for optical amplifiers or to make linear response filters whose wavelength is on a spectral band.

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Veasey et al., “Arrays of Distributed-Bragg-Reflector Waveguide Lasers at 1536 nm in Yb/Er Codoped Phosphate Glass,”Applied Physics Letters, vol. 74, No. 6, Feb. 8, 1999, pp. 789-791.

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