Patent ID: 11934010
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical connection structure configured to connect an optical waveguide device and an optical fiber, comprising:
an optical connection component using a planar lightwave circuit bonded and fixed on an end surface of an input/output waveguide of the optical waveguide device,
a value of a refractive index of a core of the planar lightwave circuit is between a value of the refractive index of the core of the optical waveguide device and a value of the refractive index of the core of the optical fiber, wherein a first spot-size converter is on a first end surface of an input/output waveguide of the planar lightwave circuit and a second spot-size converter is on a second end surface of the input/output waveguide of the planar lightwave circuit, and
the optical waveguide device and the optical fiber are optically connected via the planar lightwave circuit.