Optical filter, interleaver, and optical communication system
US6965479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Dec 10, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A first optical system (11) has a first beam splitter (211). The first beam splitter (211) splits light arriving through a first optical path (P1) into two light beams, and outputs one light beam to a second optical path (P2) and the other light beam to a third optical path (P3). A second optical system (21) outputs the light output from the first beam splitter (221) to the second optical path (P2) and arriving at the second optical system (21) upon giving the light an intensity change with wavelength dependence and a phase change, and has a second beam splitter (221), first reflecting mirror (223), and second reflecting mirror (222). This makes it possible to provide an optical filter (200) which can realize a characteristic excellent in isolation with a very simple arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.