Wavelength selective optical couplers
US5805751A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Aug 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0219
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavelength selective optical fiber coupler having various applications in the field of optical communications is disclosed. The coupler is composed of dissimilar waveguides in close proximity. A light induced, permanent index of refraction grating is recorded in the coupler waist. The grating filters and transfers energy within a particular range of wavelengths from a first waveguide to a second waveguide. Transversely asymmetric gratings provide an efficient means of energy transfer. The coupler can be used to combine or multiplex a plurality of lasers operating at slightly different wavelengths into a single fiber. Other embodiments such as a dispersion compensator and gain flattening filter are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.