Accession Number : ADP008216

Title :   Broad Band Array Multiplexers made with Silica Waveguides on Silicon,

Corporate Author : AT AND T BELL LABS MURRAY HILL NJ

Personal Author(s) : Adar, R. ; Henry, C. H. ; Dragone, C. ; Kistler, R. C. ; Milbrodt, M. A.

Report Date : APR 1992

Pagination or Media Count : 4

Abstract : Broad band two channel waveguide array multiplexers are demonstrated. Cross talk and fiber-to-fiber insertion loss are the lowest yet reported for array multiplexers: -35dB and -2dB, respectively. Narrow and broad band wavelength division multiplexers (WDMs) have many applications in optical communications and recently high order integrated optic multiplexers have been fabricated using waveguide arrays. In this paper, we introduce a new design which enables us to make low order array multiplexers. Broad band WDM's with orders (corresponding to two channel multiplexing of 1.1-1.55 micrometers, 1.31-1.53 micrometers and 1.47-1.55 micrometers) are demonstrated. The design of an array multiplexer consists of an input and and output slab couplers connected with an array of n waveguides. In this paper the input coupler couples the fundamental mode from a single input waveguide into the n array waveguides. The output coupler couples the light back from the array to two output waveguides. The operation of the array multiplexer is based on the requirement that the waveguides connecting the input and output couplers are laid out with equal length differences between neighboring waveguides. This requirement has been obtained earlier in the case of high order array multiplexers with a symmetrical arrangement of the input and output sections of the array.

Descriptors :   *OPTICAL WAVEGUIDES, *INTEGRATED SYSTEMS, *OPTICAL COMMUNICATIONS, ARRAYS, CHANNELS, COUPLERS, FIBERS, INPUT, INSERTION LOSS, LIGHT, MULTIPLEXING, OPTICS, OUTPUT, BROADBAND, SILICON.

Subject Categories : Non-radio Communications
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE