An additional geometric phase viewed as Berry's phase is found in helically coiled monomode optical fiber when linear birefiingences are induced by material.The phase appears when the optical axis and normal vector do not coincide to each other.
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机译：Simultaneous Cancellation of Fiber Loss, Dispersion, and Kerr Effect in Ultralong-Haul Optical Fiber Transmission by Midway Optical Phase Conjugation Incorporated With Distributed Raman Amplification
