Optical element, optical module, and optical transmission system

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United States of America Patent

PATENT NO 9952390
APP PUB NO 20170293085A1
SERIAL NO

15462055

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Abstract

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An optical element includes a distributed Bragg reflector, wherein the distributed Bragg reflector includes a first-order diffraction grating of a first-order period disposed in a central region, and second-order diffraction gratings of a second-order period having a coupling coefficient smaller than a coupling coefficient of the first-order diffraction grating and disposed in both end regions between which the central region is located.

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Patent Owner(s)

  • FUJITSU LIMITED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsuda, Manabu Atsugi, JP 38 347

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BIOTA, INC. (1)
* 5657407 Optical waveguide coupling device having a parallelogramic grating profile 20 1995
 
SUMITOMO ELECTRIC INDUSTRIES, LTD. (3)
2009/0092,159 Semiconductor light-emitting device with tunable emission wavelength 12 2008
2011/0051,772 SEMICONDUCTOR LASER DEVICE 4 2010
* 2011/0090,931 SEMICONDUCTOR DIFFRACTION GRATING DEVICE AND SEMICONDUCTOR LASER 2 2010
 
EPICRYSTALS OY (1)
* 2013/0321,900 OPTICAL BROADBAND FILTER AND DEVICE COMPRISING THE SAME 1 2011
* Cited By Examiner

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