Far-field power-distribution measurement in axially symmetrical and nonsymmetrical fibers using a variable-width slit.
A method for the measurement of the far-field power radiation pattern in axially symmetrical and nonsymmetrical single-modeoptical fibers is proposed. The method, based on monitoring of the power passed through a variablewidth slit in the far field, gives the power distribution as an associated Gauss-Laguerre expansion. The experimental setup permits the study of the power distribution and mode-field diameter dependence on the wavelength. Results for different types of single-mode optical fiber, including polarization-maintaining types, are presented.
Oquiñena
M J
MJ
Laboratorio de Comunicaciones Opticas, Cables de Comunicaciones S.A., Zaragoza, Spain.
Villuendas
F
F
Marqués
J B
JB
Pelayo
J
J