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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Twisted hi-bi fiber distributed-feedback lasers with controllable output state of polarization
Michalis N Zervas1, Richard Wilmshurst, Louise M B Walker
1Optoelectronics Research Centre, University of Southampton, Southampton, UK. mnz@orc.soton.ac.uk
Optics Letters
|May 2, 2013
Abstract:
We demonstrate that single polarization, hi-bi fiber DFB lasers are, in general, characterized by elliptical state of polarization (SOP), due to the in-built fiber birefringence axis rotation. Externally applied birefringence axis twist is shown to provide accurate control of the output SOP. Continuous tuning from circular to linear polarization, with polarization extinction ratio of ~40 dB, has been demonstrated.
