BACKGROUND 0003 Optical waveguides are physical structures that guide electromagnetic
waves in the optical spectrum, and are often bundled together in order to route multiple …

An optical waveguide used in a WDM optical transmission system are fabricated by the
following steps in order to be highly integrated and reduced in size and to have a more …

A star coupler includes a core embedded in a clad on a major surface of a substrate. The
refractive index of the core differs by at least 40% from the refractive index of the clad. The …

A silicon photonics array waveguide grating (AWG), and methods of their manufacture,
including a plurality of silicon photonics array waveguides running from at least one of an …

(54) METHOD AND APPARATUS FOR Kilian, A. et al.(2000).“Birefringence Free Planar
Optical CONTROLLING WAVEGUIDE Waveguide Made by Flame Hydrolysis Deposition …

(57) ABSTRACT A low-cost, high-reliability polarization-independent optical waveguide
interferometer is proposed which does not bring about any additional job involved in the …

Optical apparatus with improved center wavelength temperature stability. In an embodiment,
an AWG has a plurality of slots inserted along the optical paths. The slots contain one or …

An arrayed waveguide grating optical multiplexer/demultiplexer includes an arrayed
waveguide having a plurality of channel waveguides which includes a shortest channel …

The present invention provides an arrayed waveguide such that each waveguide of the
grating has a substantially uniform width, but the width of any single waveguide in the …

US6778750B2 - Polarization-insensitive planar lightwave circuits and method for fabricating
the same - Google Patents US6778750B2 - Polarization-insensitive planar lightwave …