WDM Detection Using Integrated Grating Demultiplexer And High Density p-i-n Array

Multi-wavelength systems are being advocated for use in future telecommunication networks and for computer processor links. In research systems the multiplexing and demultiplexing of the different wavelength signals is currently achieved through the use of bulk optical components. When channel separation are on the order of a nm or so - which is typical of 'high density' direct detection systems - the MUX/DMUX function is generally done with a diffraction grating. WDM detection at the receiver end is then obtained by assembling a detector array, placed in the focal plane of the optical grating system.