Polarization-filtering and polarization-maintaining low-loss negative curvature fibers
Links to Fileshttps://doi.org/10.1364/OE.26.009528
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Type of Work13 pages
Citation of Original PublicationChengli Wei, Curtis R. Menyuk, and Jonathan Hu, "Polarization-filtering and polarization-maintaining low-loss negative curvature fibers," Opt. Express 26, 9528-9540 (2018)
RightsThis item may be protected under Title 17 of the U.S. Copyright Law. It is made available by UMBC for non-commercial research and education. For permission to publish or reproduce, please contact the author.
SubjectsFiber design and fabrication
polarization-filtering and polarization-maintaining negative curvature fiber
We propose a polarization-filtering and polarization-maintaining negative curvature fiber in which two nested resonant tubes are added to a standard negative curvature fiber with one ring of tubes. The coupling between the glass modes in the nested resonant tubes and the fundamental core modes is used to increase the birefringence and differential loss for the fundamental core modes in the two polarizations. We show computationally that the birefringence and the loss ratio between the modes in the two polarizations can reach 10−5 and 850, respectively. Meanwhile, the low-loss mode has a loss that is lower than 0.02 dB/m. The relatively simple design of this polarization-maintaining negative curvature fiber will be useful in hollow-core fiber devices that are sensitive to polarization effects, such as fiber lasers, fiber interferometers, and fiber sensors.
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