Mode size converters for reducing a modal profile of incoming light
First Claim
1. A mode size converter comprising:
- an overlay waveguide having an input end configured to receive light from an optical element, the overlay waveguide having a first refractive index; and
a signal waveguide embedded within the overlay waveguide and having a second refractive index that is greater than the first refractive index, the signal waveguide including first and second arm segments and a stem segment that form a Y-junction, the first and second arm segments configured to reduce a modal profile of the light propagating from the input end of the overlay waveguide toward the stem segment, each of the first and second arm segments having a distal end and a pair of opposite side edges, wherein the pair of side edges extend parallel to each other between the corresponding distal end and the stem segment.
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Accused Products
Abstract
Mode size converter including an overlay waveguide having an input end configured to receive light from an optical element. The overlay waveguide has a first refractive index. The mode size converter also includes a signal waveguide that is embedded within the overlay waveguide and has a second refractive index that is greater than the first refractive index. The signal waveguide includes first and second arm segments and a stem segment that form a Y-junction. The first and second arm segments are configured to reduce a modal profile of the light propagating toward the stem segment from the input end of the overlay waveguide. Each of the first and second arm segments has a distal end and a pair of opposite side edges, wherein the pair of side edges extend parallel to each other between the corresponding distal end and the stem segment.
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Citations
20 Claims
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1. A mode size converter comprising:
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an overlay waveguide having an input end configured to receive light from an optical element, the overlay waveguide having a first refractive index; and a signal waveguide embedded within the overlay waveguide and having a second refractive index that is greater than the first refractive index, the signal waveguide including first and second arm segments and a stem segment that form a Y-junction, the first and second arm segments configured to reduce a modal profile of the light propagating from the input end of the overlay waveguide toward the stem segment, each of the first and second arm segments having a distal end and a pair of opposite side edges, wherein the pair of side edges extend parallel to each other between the corresponding distal end and the stem segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mode size converter comprising:
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an overlay waveguide having an input end configured to receive light from an optical element, the overlay waveguide having a first refractive index; a signal waveguide embedded within the overlay waveguide and having a second refractive index that is greater than the first refractive index, the signal waveguide including first and second arm segments and a stem segment that form a Y-junction, the first and second arm segments configured to reduce a modal profile of the light propagating from the input end of the overlay waveguide toward the stem segment, wherein each of the first and second arm segments includes an angled extension and a base portion coupled to the angled extension, the angled extensions of the first and second arm segments forming a V-shaped pattern, the base portions of the first and second segments extending substantially parallel to each other with an operable gap there between. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification