Non-sinusoidal optical fiber filters and method of making the same
US6832030B2 · kind B2 · utility
2Cited by
10References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2003 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Jul 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29352
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber filter (25) with a non-sinusoidal wavelength response is produced by forming an adiabatic taper in a single mode fiber (10) and forming non-adiabatic tapers (18, 20) on slopes at each end of the elongated central region of this adiabatic tape and in the middle of the central region (12). The non-adiabatic taper (22) in the middle of the central region (12) produces a phase shift in the wavelength response leading to non-sinusoidal filtering characteristics. The filter may be combined with a Mach-Zehnder interferometer to produce a Mach-Zehnder device with a non-sinusoidal wavelength response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.