WDM-PON system with optical wavelength alignment function
US7327771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2004 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Mar 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0227
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A PLC-based wavelength-tunable WDM-PON system with an optical wavelength alignment function, the WDM-PON system comprises: a PLC platform formed on a silicon substrate; a semiconductor chip comprising an active region generating light and a passive region located in front of the active region for vertically coupling the light generated in the active region; a planar lightwave circuit (PLC) waveguide; one portion of a PLC platform where the semiconductor chip is surface mounted; waveguide Bragg grating (WBG) formed at a predetermined location of the PLC waveguide; a directional coupler transferring an optical power by permitting the passive region to approach the PLC waveguide; a heater terminal, which is formed on the WBG; and a V-groove for attaching an optical fiber to another end of the PLC waveguide. Accordingly, a WDM-PON system having a function of realizing a cost-effective optical wavelength alignment can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.