Bidirectional HDCP module using single optical fiber and waveguide combiner/splitter
First Claim
1. A transmission module having a waveguide combiner/splitter for single fiber bidirectional optical data communication, the module comprising:
- a first light source for transmitting light along a first forward channel through a first branch of a waveguide;
a detector for receiving light along a backward channel through a second branch of the waveguide;
a first optical fiber transverse to the forward and backward channels, the optical fiber being between the light source and the waveguide to couple the transmitted light to the first branch of the waveguide and being between the detector and the waveguide to couple the received light from the second branch of the waveguide; and
a join-section of the waveguide, wherein the first and second branches of the waveguide merge.
1 Assignment
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Accused Products
Abstract
Embodiments provide single fiber bidirectional HDCP modules. A signal fiber module includes at least one laser and at least one detector and a waveguide combiner/splitter. An optical fiber is used as a cylindrical lens in order to partially collimate in the vertical axis the optical signals entering and leaving branches of a waveguide. The branches of the waveguide have lens-shape interfaces in order to at least partially collimate in the horizontal axis the beams entering and leaving the waveguide. Each branch of the waveguide tapers toward a join-section of the waveguide. At the join section, the cross-section of a laser branch is smaller than the cross-section of a detector branch. If more than one detector is present in a module, the cross-sections of the detector branches differ from each other. If more than one laser is present in a module, the cross-sections of the laser branches differ from each other.
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Citations
27 Claims
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1. A transmission module having a waveguide combiner/splitter for single fiber bidirectional optical data communication, the module comprising:
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a first light source for transmitting light along a first forward channel through a first branch of a waveguide; a detector for receiving light along a backward channel through a second branch of the waveguide; a first optical fiber transverse to the forward and backward channels, the optical fiber being between the light source and the waveguide to couple the transmitted light to the first branch of the waveguide and being between the detector and the waveguide to couple the received light from the second branch of the waveguide; and a join-section of the waveguide, wherein the first and second branches of the waveguide merge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A receiver module having a waveguide combiner/splitter for single fiber bidirectional optical data communication, the module comprising:
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a first detector for receiving light along a first forward channel through a first branch of a waveguide; a light source for transmitting light along a backward channel through a second branch of the waveguide; a first optical fiber transverse to the forward and backward channels, the optical fiber being between the waveguide and the first detector to couple the received light from the first branch of the waveguide and being between the waveguide and the light source to couple the transmitted light to the first branch of the waveguide; and a join-section of the waveguide, wherein the first and second branches of the waveguide merge. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification