Being the manner which produces the multiple multiplex diffraction gratings in or on the mannered null single plane surface light wave circuit

摘要

Multiple Bragg gratings in multiple (712,714,716,718,720) is made in a single planar lightwave circuit platform one. It has a central wavelength of multiple and different lattice spacing nominally identical, the central wavelength and the lattice spacing thereof, grating multiple, using controlled doping and optical lithography process and / or a controlled are made, to control the effective refractive index of the grating of multiple. Grating (s) can take a close spacing from one another more than the height of the UV light pattern used to write the gratings of the plurality.