Abstract
A time multiplexed rectangular Zernike modal wavefront sensor based on a nematic phase-only liquid
crystal spatial light modulator and specially designed for a high power two-electrode tapered laser diode which is a
compact and novel free space optical communication source is used in an adaptive beam steering free space optical
communication system, enabling the system to have 1.25 GHz modulation bandwidth, 4.6° angular coverage and
the capability of sensing aberrations within the system and caused by atmosphere turbulence up to absolute value of
0.15 waves amplitude and correcting them in one correction cycle. Closed-loop aberration correction algorithm can be
implemented to provide convergence for larger and time varying aberrations. Improvement of the system
signal-to-noise-ratio performance is achieved by aberration correction. To our knowledge, it is first time to use
rectangular orthonormal Zernike polynomials to represent balanced aberrations for high power rectangular laser beam in
practice.
© 2014 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription