Optical transmitter module
US10187157B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Mar 9, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To provide an optical transmitter module with simplified control of a voltage to be applied to an optical modulator. An optical transmitter module includes a semiconductor laser for irradiating a laser beam; a demultiplexer for branching the laser beam to output branched light beams; optical modulators for modulating an optical amplitude of each of the branched light beams into a first optical amplitude or a second optical amplitude, depending on an input level at two levels; and a multiplexer for multiplexing output light beams from the optical modulators. The optical transmitter module may include optical waveguides for connecting the optical modulators and the multiplexer, and the optical waveguides may include a first optical waveguide for causing a first phase difference and a second optical waveguide for causing a second phase difference different from the first phase difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.