A new structure of tunable polarization interference dense wavelength division multiplexing (DWDM) filter based on the analog birefringent module is presented.
The DWDW demodulate technology which use the DWDM filter curve and wavelength division multiplex technology can realize multichannel dynamic demodulate.
Control pulse is coupled into this pulse shaper by wavelength division multiplexer. Nonlinear phase shift of signal laser is induced by control pulse because of cross phase modulation.
The integrated optics wavelength division multiplexing device using geodesic lens and grating has been fabricated.
