Cause and countermeasure of oil refining loss;

Measuring the specifications of the imported frozen semen thin tubes and the semen loss rate;

Analysis of confinement loss in microstructured optical fibers with elliptical air holes;

In this paper,foundational mode filed,birefringence,dispersion and confinement loss ofphotonic crystal fiber which is designed by myself are carried on the numerical computation use multipole method.

The mode cutoff,confinement loss,modal radius,and numerical aperture of photonic crystal fiber(PCF) with high birefringence were analyzed by using full-vector finite difference frequency domain(FDFD) method.

Its principles of loss modulation are analysed.

The experimental operation of a bistable Ar ion laser by output-feedback loss modulation scheme has been reported,Within the resonator of laser,there is an electro-optical crystal LiNbO_3 which is used as an optical loss-modu- lator.

An analytical expression of the steady-state laser output intensity of a bistable semiconductorlaser of output- feedback loss-modulation has been obtained from rateequations.

The steady-state solutions of semiclassical laser equations for a laser by out-put-feedback loss-modulation scheme have been obtained, and a linear-stabilityof the solutions analysed.