Adiabatic polarization converter
First Claim
1. A waveguide structure comprising:
- a polarization rotator comprising an input end, an output end and a midsection extending between the input end and the output end, the midsection including a core having a single layer and including a first level and a second level disposed adjacent the first level, the first level having a width that decreases along at least a portion of a length of the first level, such that the core induces rotation of a polarization of an electromagnetic signal as the electromagnetic signal propagates along the length of the midsection.
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Accused Products
Abstract
The present invention relates to a waveguide structure, and methods for making the same. The waveguide structure has a polarization rotator for rotating the polarization of the electromagnetic signal, preferably by about ninety-degrees. In one embodiment, the polarization rotator has a midsection with a first level and a second level. The first level of the midsection has a width that decreases along the length of the first level, while the second level has a substantially constant width along the length of the second level. Further, the waveguide structure can include an input conditioning section and the output conditioning section to facilitate matching between the polarization rotator and other waveguide elements.
81 Citations
16 Claims
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1. A waveguide structure comprising:
a polarization rotator comprising an input end, an output end and a midsection extending between the input end and the output end, the midsection including a core having a single layer and including a first level and a second level disposed adjacent the first level, the first level having a width that decreases along at least a portion of a length of the first level, such that the core induces rotation of a polarization of an electromagnetic signal as the electromagnetic signal propagates along the length of the midsection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A waveguide structure comprising:
a polarization rotator comprising an input end, an output end and a midsection extending between the input end and the output end, the midsection including a core having a uniform construction and including a first level and a second level disposed adjacent the first level, the first level having a width that decreases along at least a portion of a length of the first level, such that the core induces rotation of a polarization of an electromagnetic signal as the electromagnetic signal propagates along the length of the midsection. - View Dependent Claims (12, 13, 14, 15, 16)
Specification