Abstract
Precision measurements of modal birefringence in polarization-maintaining single-mode fibers and its stretch-dependence are described. An orthogonally polarized two-frequency laser beam is launched into some length of a fiber in accordance with the principal axes of the fiber. After a passage through the fiber, its optical heterodyne detection processes are made to produce a beat-photocurrent signal whose phase is linear to modal birefringence. The modal birefringence is accurately measured by detecting the phase change of the beat signal resulting from a short cut of the fiber. The stretch-dependent change in modal birefringence is also examined in detail and is recognized to be in proportion to the longitudinal strain of the fiber.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.