Large flattened mode tuned cladding photonic crystal fiber laser and amplifier
US7142757B1 · kind B1 · utility
36Cited by
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1Claims
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Key dates
| Filing date | Sep 20, 2005 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Sep 20, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02019
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A modified photonic crystal fiber yielding a higher peak power for a given maximum intensity. The multi-mode signal core has a depressed index of refraction that pushes the mode distribution to the core edges while a pattern of larger air holes is used to flatten the mode distribution. The core is further surrounded by tuned cladding elements defined by a pattern of smaller air holes that cause loss in all of the core modes except the fundamental while maintaining robust guiding of the fundamental mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.