Optical waveguides – With optical coupler – Input/output coupler
Patent
1996-11-27
1998-04-28
Healy, Brian
Optical waveguides
With optical coupler
Input/output coupler
385 14, 385 15, 385 17, 385 18, 385 39, 385 46, 385 47, 359115, 359124, 359127, 359130, G02B 634, H04J 1402
Patent
active
057456160
ABSTRACT:
A compact waveguide grating router is constructed by forming at least first and second free space regions, first and second sets of optical ports, and a grating array, onto a substrate. The grating array is coupled to the first free space region and the second free space region. A first plane defining a first reflective surface is introduced into the first free space region, and a second plane defining a second reflective surface is introduced into the second free space region. The first plane is oriented such that incident optical signals from the first set of optical ports are reflected to the grating array, and the second plane is oriented such that incident optical signals from the grating array are reflected to the second set of optical ports. The first and second planes are provided, for example, by cleaving, cutting, etching, sawing, or any other suitable technique. The first and second planes enable the input and output ports to be folded back into previously unoccupied space. The aforementioned techniques enable the size of any conventional waveguide grating router to be substantially reduced.
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Bartholomew Steven R.
Healy Brian
Lucent Technologies - Inc.
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