Nano-optical gratings for integrated laser interferometer arrays

In this contribution we show that binary nano-optical gratings in the resonance domain are ideal elements to build up such integrated interferometers. By means of symmetry considerations the grating´s requirements for an ideal operation of the interferometer are determined. Utilizing the resonance behaviour of such nano-structures an interferometer operation close to the theoretical limits is reachable. A modal analysis reveals the basic effects causing the special responses of the gratings. The gratings are fabricated by electron-beam lithography and accompanied technology.