We demonstrate a multi-wavelength fiber laser employing polarization-maintaining(PM)undoped fiber based on nonlinear polarization rotation(NPR).The PM fiber
We propose a superradiant laser based on two-photon Raman transition of cesium -133 atoms which collectively emit photons on an ultra narrow transition into
We proposed a novel rectangular lattice dual-core photonic crystal fiber and numerically investigate its birefringence and dispersion.Based on the plane wav