Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2011-06-28
2011-06-28
Peng, Charlie (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling function
C385S132000
Reexamination Certificate
active
07970243
ABSTRACT:
The present invention provides an MMI optical device that can prevent a possible decrease in transmission rate in spite of miniaturization and integration. The optical device includes a rectangular multimode waveguide and an electromagnetic wave absorber of a light source wavelength. The electromagnetic wave absorber is located on at least one side surface of the rectangular multimode waveguide and is located at a predetermined gap from a core of the rectangular multimode waveguide.
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Carmen Vazquez et al., “Experimental assessment of access guide first-order mode effect on multimode interference couplers”, Optical Engineering, vol. 40, No. 7, Jul. 2001, pp. 1160-1162, 2001 Society of Photo-Optical Instrumentation Engineers, Spain.
Panasonic Corporation
Peng Charlie
RatnerPrestia
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