Adiabatic Y-branch waveguide having controllable chirp
US6222966A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Dec 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/25
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Changing the index in the two output branches of a Y-branch optical waveguide in opposite directions, in amounts which are controlled by electrical signals applied to the branches, is used to control the chirp of the signal outputted from the Y-branch optical waveguide. In this manner, predetermined amount of chirp can be add to or subtract from an input signal to the Y-branch optical waveguide. The Y-branch optical waveguide can be fabricated using Group II-VI, Group III-V or Group IV material systems or using an insulating material, such as lithium niobate. The output branches of a semiconductor implemented Y-branch optical waveguide can be fabricated to each include a multiple quantum well for controlling the refractive index of that branch in response to an electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.