H. Okayama et al., DYNAMIC WAVELENGTH-SELECTIVE ADD DROP NODE COMPRISING FIBER GRATINGS AND OPTICAL SWITCHES/, Electronics Letters, 33(5), 1997, pp. 403-404
An add/drop node using fibre gratings and optical snitches is proposed
. The add/drop wavelengths can be switched by routing light to the fib
re grating with which a desired wavelength light is diffracted.