A hollow waveguide michelson interferometer

Summary form only given. In earlier work we demonstrated the use of hollow waveguides to guide light between the individual components of an optical circuit integrated into a common substrate [1]. The approach leads to compact rugged systems with excellent optical performance. As illustrated in Fig. la, we propose the application of the concept to a Michelson interferometer. Here hollow waveguides are used to guide the input radiation to an integrated 45° beam splitter/combiner, then to the arm mirrors of the interferometer and ultimately to an external detector. In practice the hollow waveguides are formed as square-section channels in the substrate in conjunction with a lid.