CPC G02B 6/34 (2013.01) [G02B 6/30 (2013.01); G02B 6/4214 (2013.01)] | 20 Claims |
1. A method of using a coupling system, the method comprising:
aligning an optical fiber with a cavity in a chip, wherein aligning the optical fiber comprises orienting a longitudinal axis of the fiber within an angle ranging from about 88-degrees to about 92-degrees with respect to a top surface of the chip;
emitting an optical signal from the optical fiber;
passing the optical signal through an etch stop layer; and
redirecting, after passing the optical signal through the etch stop layer, the optical signal into a waveguide using a grating positioned on an opposite side of a bottom of the cavity relative to the optical fiber.
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