TITLE:
Nonlinear Polarization Rotation Characteristic Phenomenon in a Bulk Semiconductor Optical Amplifier
AUTHORS:
Xianghua Feng, Jiarong Ji, Guomin Zhang
KEYWORDS:
Strained Bulk SOA; Nonlinear Polarization Rotation; Phase Difference; Polarization Azimuth
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2B,
July
22,
2013
ABSTRACT: The phenomena of polarization rotation induced by self-modulation in
semiconductor optical amplifier (SOA) are analyzed theoretically. The
relationship between polarization parameters and gain as well as phase is
obtained by the correlation parameter of ellipse polarization and SOA
nonlinearity polarization rotation theory. The experiment employs polarizer
drive by walking electromotor and power meter, the light power of 360 degree is
measured. The transformation law of output polarization power components is found for obvious polarization rotation in the
selected coordinate axes based on connection of polarization state in difference
axes. Using this law make the manipulation easily on getting ideal polarization
state. It can offer a fine method to realize all-optical switch and other logic
elements in experiment. This work is of great significance for the applications of
SOA nonlinear polarization rotation at high-speed all-optical signal processing
and all-optical logic gate.