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US 6,275,322 B1Granted
Michelson phase shifter interleaver/deinterleavers
AssigneeJDS Uniphase Corporation
InventorKuochou Tai
Life of this patent
Estimating the term…
Abstract
Interleavers and deinterleavers for filtering optical signals are described. The interleaver separates subsets of channels. The deinterleavers mix subsets of channels. Interleavers and deinterleavers can be used to increase the bandwidth of an optical network. The interleavers and deinterleavers can be used to interface components designed for a first channel spacing to components designed for a second channel spacing.
Claims51
An apparatus comprising:
- a beam splitter;
- an etalon optically coupled to the beam splitter, the etalon having a reflective surface and an air gap, the reflective surface to reflect signals passed through the air gap, the etalon further having a tuning plate disposed within the air gap;
- and
- a non-linear phase shifter optically coupled to the beam splitter, the non-linear phase shifter to modify a phase of optical signals passed through an air gap of the non-linear phase shifter;
- the modified phase of optical signals passed through the non-linear phase shifter and the reflected optical signals reflected by the etalon to cause constructive and destructive optical interference within the beam splitter such that optical signals received via a first port is separated into a first subset and a second subset directed to a second port and the first port, respectively, and further wherein optical signals received via the second port and the first port are combined and directed to the first port.
2 more elements
An apparatus comprising:
- means for splitting an optical signal;
- means for non-linear phase shifting optical signals received from the means for splitting, the means for non-linear phase shifting optically coupled to the means for splitting;
- and
- means for providing a sinusoidal transfer function to operate on optical signals received from the means for splitting, the means for providing the sinusoidal transfer function optically coupled to the means for splitting;
- wherein a signal received via a first port is separated into a first subset and a second subset directed to a second port and the first port, respectively, and further wherein optical signals received via the second port and the first port are combined and directed to the first port.
2 more elements
A method comprising:
- abutting an etalon to a beam splitter such that optical contact between the etalon and the beam splitter are maintained by atomic force;
- and
- abutting a non-linear phase shifter to the beam splitter such that optical contact between the non-linear phase shifter and the beam splitter are maintained by atomic force.
Dependencies are inferred from the claim text.