Semiconductor optical element, optical module and method of manufacturing semiconductor optical element
US9246622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2014 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Jun 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4012
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor optical element and an optical module in which extinction ratio variation among integrated optical modulation elements is reduced. An optical module has a wavelength multiplexer that multiplexes light respectively emerging from electric-field-absorption modulator (EAM) portions of integrated optical modulation elements, and that outputs the multiplexed light. The integrated optical modulation element has a signal input terminal, a laser element portion, and an EAM portion. Each of the integrated optical modulation elements has a difference between an oscillation wavelength and a barrier layer bandgap wavelength, represented as an LDBG wavelength difference. Variation of the LDBG wavelength differences is limited within a range of ±1 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.