A mode-converting optical coupler may include a secondary waveguide to guide light in one
or more secondary optical modes, and a primary waveguide to guide light in one or more …

An optical waveguide structure may include a dielectric layer having a top surface, an optical
waveguide structure, and an optical coupler embedded within the dielectric layer. The …

Provided is a waveguide mode converter (30) that converts a waveguide mode and that is
placed in a transition area (connection section)(43) of a rib-type waveguide (50) and a …

An optical waveguide structure may include an optical waveguide structure located within a
semiconductor structure and an optical coupler. The optical coupler may include a metallic …

An optical waveguide structure and a manufacturing method thereof are disclosed. The
optical waveguide structure has a first waveguide layer, a binding layer, and a second wave …

An optical module that is connectable to an optical fiber array and that can be packaged in a
high density. Two package modules are mounted on a board, and optical waveguides in a …

Provided are an optical coupling device and a method for manufacturing the same. The
optical coupling device includes a first waveguide including a first forward tapered part, a …

Optical input/output (I/O) devices, which include a substrate including a trench, a waveguide
within the trench of the substrate; and a photodetector within the trench and optically …

A light waveguide includes a first cladding layer, a groove formed in the first cladding layer,
a core layer embedded in the groove, and a second cladding layer formed on the first …

An optical device includes: a first cladding layer; a core layer disposed on the first cladding
layer and, with increase in its sectional area, extending from a first end which …