PLANAR LIGHTWAVE CIRCUIT AND PRODUCTION METHOD FOR PLANAR LIGHTWAVE CIRCUIT

• Main Authors: MURASAWA ATSUSHI, NAITO MASAHIKO, JINNOUCHI YOSHITERU
• Format: Patent
• Language: English
• Published: 08.11.2012
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

A planar lightwave circuit according to the present invention includes at least two interferometers each of which includes a plurality of optical waveguides, and dummy patterns that are provided on both sides of each of the optical waveguides of an interferometer, having an optical waveguide density lower than the highest optical waveguide density, of the interferometers. The optical waveguide density of an interferometer A1 is higher than the optical waveguide density of the interferometer A2. Therefore, the planar lightwave circuit includes dummy patterns provided on both sides of each optical waveguide of the interferometer A1.