| CPC G02B 6/305 (2013.01) [G02B 6/12004 (2013.01); G02B 6/1228 (2013.01); G02B 6/136 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12147 (2013.01)] | 20 Claims |
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1. A structure comprising:
a first edge coupler having a longitudinal axis, the first edge coupler comprising a plurality of segments aligned along the longitudinal axis, the first edge coupler terminated by one of the segments at a facet, the plurality of segments having respective width dimensions that increase with increasing distance from the facet, and the first edge coupler configured to receive light at the facet;
a first ring resonator positioned adjacent to the first edge coupler, the first ring resonator spaced in a lateral direction from the longitudinal axis of the first edge coupler by a first distance;
a second ring resonator spaced in a vertical direction from the first ring resonator, the second ring resonator having an overlapping relationship with the first ring resonator;
a third ring resonator positioned adjacent to the first edge coupler; and
a fourth ring resonator spaced in the vertical direction from the third ring resonator, the fourth ring resonator having an overlapping relationship with the third ring resonator, and the fourth ring resonator spaced in the lateral direction from the longitudinal axis of the first edge coupler by a second distance,
wherein the first edge coupler is positioned in the lateral direction between the first ring resonator and the third ring resonator, the first ring resonator and the second ring resonator are concentric, and the third ring resonator and the fourth ring resonator are concentric.
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