Wei, ChengliMenyuk, CurtisHu, Jonathan2018-04-172018-04-172018Chengli Wei, Curtis R. Menyuk, and Jonathan Hu, "Polarization-filtering and polarization-maintaining low-loss negative curvature fibers," Opt. Express 26, 9528-9540 (2018)http://hdl.handle.net/11603/8778On an OSA Open Access License. uthors and readers may use, reuse, and build upon the article, or use it for text or data mining without asking prior permission from the publisher or the Author(s), as long as the purpose is non-commercial and appropriate attribution is maintained.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.13 pagesen-USThis 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.Fiber design and fabricationFibers, polarization-maintaining.Fiber propertiespolarization-filtering and polarization-maintaining negative curvature fiberText