Optical waveguides and optical devices with optical waveguides

Details Optical waveguides and optical devices with optical waveguides Optical waveguides and optical devices with optical waveguides

2005-08-16

2005-08-16

Kianni, Kaveh C. (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S043000

Reexamination Certificate

active

06931189

ABSTRACT:
The invention provides an optical waveguide for enabling the reduction of a coupling loss caused by difference in the size of a mode field diameter between optical waveguide modes different in the mode field diameter and a coupling loss caused by reflection on a boundary caused by the difference of media and an optical device using it. Structure provided with a mode field diameter converter provided with an antireflection part required to reduce a coupling loss between a microoptical circuit and a single mode optical fiber is integrally produced using effective refractive index control based upon photonic crystal structure.

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