Optical waveguides – With optical coupler – Particular coupling structure
Patent
1991-03-04
1992-04-28
Healy, Brian
Optical waveguides
With optical coupler
Particular coupling structure
385 35, 385 49, 385 89, 359131, 359133, 359188, 25022711, 25022728, 250226, 372 50, G02B 626, H04J 100, H01J 516, H01S 319
Patent
active
051094479
ABSTRACT:
A broadband optical source with a flat spectral output and high output power for use in a fiber optic sensor interface system. The broadband optical source comprises N optical sources such as LEDs, where N is a positive integer greater than 1. The N optical sources output a plurality of optical signals having center wavelengths .lambda.i, spectral widths .DELTA..lambda.i and powers Pi, where i is a positive integer corresponding to each of the N optical sources. The broadband LED source also comprises a waveguide coupler for receiving and combining said plurality of optical signals and for outputting a broadband optical signal. The broadband LED source outputs extremely spectrally flat, broadband signals when the center wavelengths .lambda.i are separated by approximately 2/3 of the spectral widths .DELTA..lambda.i.
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Healy Brian
The Boeing Company
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