Patent · US Active

Optical module and inputting method

US10422953B2 · kind B2 · utility

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8Claims
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Key dates

Filing dateDec 3, 2018
Grant dateSep 24, 2019
Priority date—
Expiry dateDec 3, 2038

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B2006/12061
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical module includes: an output section that outputs TM light; and a substrate-type optical waveguide. The substrate-type optical waveguide includes: a waveguide that guides the TM light outputted from the output section; a polarization rotating element that converts the TM light guided through the waveguide into TE light; and a function element that receives the TE light. In the optical module equation (a×L)>(b×L+c) is satisfies, where L is a length of the waveguide, a is a propagation loss of the TE light per unit length of the waveguide, b is a propagation loss of the TM light per unit length of the waveguide, and c is an insertion loss by the polarization rotating element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.