Compact wavelength filter integrated to a single-mode optical fiber
US4946250A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Sep 7, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02052
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavelength filter is integrated to a single-mode optical fiber capable of propagating a light signal and comprising a longitudinal and opaque outer jacket enveloping the fiber. This fiber is stripped of its jacket on a given length thereof to obtain a non-jacketed length of optical fiber. The so produced non-jacketed fiber length is formed with first and second concatenated biconical tapers separated from each other by a given distance and each having a given profile. By appropriately selecting the distance separating the two tapers and the given profile thereof, the filter will enable transmission of a first, predetermined wavelength of the propagated light signal while it will stop a second, predetermined wavelength of the signal. A method of integrating such a filter to a single-mode optical fiber is also proposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.