Broadband and low-loss mode scramblers using CO 2 -laser inscribed long-period gratings
We demonstrate broadband and low-loss three-mode and six-mode scramblers employing CO -laser inscribed long-period gratings (LPGs) for space-division multiplexing. Step-index (SI) few-mode fibers are used to avoid mode coupling to the cladding modes. We characterize the mode scramblers using a swept...
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Published in | Optics letters Vol. 43; no. 12; p. 2868 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
15.06.2018
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Online Access | Get more information |
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Summary: | We demonstrate broadband and low-loss three-mode and six-mode scramblers employing CO
-laser inscribed long-period gratings (LPGs) for space-division multiplexing. Step-index (SI) few-mode fibers are used to avoid mode coupling to the cladding modes. We characterize the mode scramblers using a swept-wavelength interferometer. Mode-dependent loss (MDL) and modal transfer matrices over the C+L band are presented. Demonstrated LPGs with negligible MDL and low insertion loss contributed to high-performance CO
-laser inscription. The total MDLs induced by the SI fiber with LPGs in three-mode and six-mode scramblers are measured to be 2 and 4 dB, respectively. |
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ISSN: | 1539-4794 |
DOI: | 10.1364/OL.43.002868 |