Single mode couplers
US4950045A · kind A · utility
17Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Jul 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2813
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A 1.times.N single mode optical waveguide coupler comprises a single input optical fibre (1), a slab-like mixer waveguide (3) and a plurality (N) of output optical fibres (2). As a result of interference effects light introduced into the mixer waveguide (3) via the centrally located input fibre (1) produces a linear array of output spots at various intervals along the length of the mixer waveguide. The length of the mixer waveguide is chosen such that the output optical fibres are aligned with one such array of output spots. The fibres may be adiabatically tapered to a smaller diameter in order to increase their modal spot size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.