Optical transmission apparatus
US6236771A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Feb 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0265
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical transmission apparatus, where the variation of optical wavelength due to temperature change is slight, and at the same time, the stray capacitance of an external modulator is reduced, and an optical integrated structure having a light source and the external modulator is mounted in a mechanically stable manner. The external modulator modulates output light from a semiconductor laser. The semiconductor laser is a front-end emission semiconductor laser that emits unmodulated light. The semiconductor laser and the modulator are monolithically integrated as an integrated structure. Control electrodes of the semiconductor laser and the modulator formed on a waveguide of the integrated structure are junction-down mounted via solder material to a laser-driving electrode and optical-modulator driving electrode separately formed on an optical mounting substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.