A NOVEL WAVELENGTH-DIVISION-DEMULTIPLEXER WITH OPTICAL INPLANE TO SURFACE-NORMAL CONVERSION

We present a novel surface-normal optical wavelength-division-demultip lexer (WDDM), working at 750, 770, 790, 810, 830, and 850 nm wavelengt hs, The device is based on the integration of a polymer-based planar w aveguide, a substrate waveguiding plate, and waveguide holograms, The unique optical in-plane to surface-normal conversion converts the diff icult three spatial and three angular edge coupling problem into a pla nar surface one, resulting in a reliable miniaturized optoelectronic p ackaging containing a photodetector array and the WDDM, A six-channel wavelength-division-demultiplexer with equally spaced collinear surfac e-normal outputs are designed and demonstrated in a polymer-based plan ar waveguide in conjunction with holograms on a glass substrate.