Spatial division multiplexing optical mode converter
First Claim
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1. An optical device, comprising:
- a star coupler having a port at a first end face;
a polarization beam splitter optically coupled via a first side to said star coupler port, and optically coupled via a second side to a first port of an optical coupler;
a polarization rotator optically coupled between said polarization beam splitter and a second port of said optical coupler; and
a circular grating coupler having a plurality of radial ports coupled to said star coupler at a second end face.
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Abstract
Embodiments provide an optical device that includes a star coupler, a polarization bam splitter (PBS) and a polarization rotator. The star coupler includes a port at a first end face. The polarization beam splitter is optically coupled via a first side to the star coupler port, and is further optically coupled via a second side to a first port of an optical coupler. The polarization rotator is optically coupled between the polarization beam splitter and a second port of the optical coupler.
46 Citations
21 Claims
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1. An optical device, comprising:
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a star coupler having a port at a first end face; a polarization beam splitter optically coupled via a first side to said star coupler port, and optically coupled via a second side to a first port of an optical coupler; a polarization rotator optically coupled between said polarization beam splitter and a second port of said optical coupler; and a circular grating coupler having a plurality of radial ports coupled to said star coupler at a second end face. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical device, comprising:
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a circular grating coupler having a plurality of radial ports; a star coupler connected to said radial ports via a first end face; and a plurality of polarization beam splitters each being optically coupled via a first end to a second end face of said star coupler, each polarization beam splitter being optically coupled via a second end to one of a corresponding plurality of optical couplers. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method, comprising:
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forming a circular grating coupler having a plurality of radial ports; forming a star coupler connected via a first end face to said radial ports; and forming a plurality of polarization beam splitters such that each of said polarization beam splitters is coupled via a first end to a second end face of said star coupler, and each polarization beam splitter is optically coupled via a second end to an optical coupler. - View Dependent Claims (18, 19, 20)
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21. An optical device, comprising:
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a star coupler having an end face; a circular grating coupler having 2n input ports; and a plurality of waveguides connecting said end face to said circular grating coupler, wherein said waveguides are routed in groups having an integer multiple of two associated members, with the number of associated waveguides in each group sequentially decreasing from said end face to said circular grating coupler input ports.
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Specification