Multiple-width delay arms for a wavelength-division-multiplexing filter
AssigneeGlobalFoundries U.S. Inc.
InventorsAneesh Dash, Sujith Chandran, Yusheng Bian, Avijit Chatterjee, Won Suk Lee, Michal Rakowski
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Abstract
Structures for a wavelength-division-multiplexing filter and methods of forming a structure for a wavelength-division-multiplexing filter. The structure comprises a first waveguide core including a first phase delay arm and a second waveguide core including a second phase delay arm. The first phase delay arm has a first section and a second section connected to the first section. The first section of the first phase delay arm and the second section of the first phase delay arm are asymmetrical.
Claims20
A structure for a wavelength-division-multiplexing filter, the structure comprising:
- a first waveguide core including a first phase delay arm, the first phase delay arm having a first section and a second section connected to the first section;
- and
- a second waveguide core including a second phase delay arm,
- wherein the first section of the first phase delay arm is asymmetrical from the second section of the first phase delay arm.
A method of forming a structure for a wavelength-division-multiplexing filter, the method comprising:
- forming a first waveguide core including a first phase delay arm, wherein the first phase delay arm has a first section and a second section connected to the first section, and the first section of the first phase delay arm and the second section of the first phase delay arm are asymmetrical;
- and
- forming a second waveguide core including a second phase delay arm.
Dependencies are inferred from the claim text.