Optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator
US8270789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2010 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/307
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided an optical waveguide element comprises: a core of an optical waveguide; and a Bragg grating pattern that is provided on the core, wherein a pitch of the Bragg grating pattern takes a value from among three or more predetermined discrete values; the pitches that take the respective discrete values are present in a plurality of locations over an entire length of the optical waveguide respectively; and if a value from among all of the discrete values which has the highest distribution frequency is taken as M, and if the closest value to the M which is larger than the M is taken as A, and if the closest value to the M which is smaller than the M is taken as B, then a difference expressed as A−M is equal to a difference expressed as M−B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.