Multiplexer/demultiplexer with flattened spectral response

    公开(公告)号:AU2841797A

    公开(公告)日:1998-01-15

    申请号:AU2841797

    申请日:1997-07-01

    Applicant: CORNING INC

    Inventor: TROUCHET DENIS M

    Abstract: A new multiplexer/demultiplexer (50) includes a compound focusing mechanism having adjacent focal points (F1,F2). Multiple images of one or more input pathways for each different wavelength signal are projected onto one or more output pathways. The resulting spectral response is flattened in the vacinity of the center wavelength of each different wavelength signal. The number and spacing of the focal points, as well as the mode field radii of the input and output pathways, can be optimized for desired combinations of channel bandwidth, insertion loss, and crosstalk.

    WAVELENGTH DEMULTIPLEXER; CONSTRUCTED USING INTEGRATED OPTICS

    公开(公告)号:CA2213134A1

    公开(公告)日:1997-07-03

    申请号:CA2213134

    申请日:1996-12-09

    Applicant: CORNING INC

    Inventor: TROUCHET DENIS M

    Abstract: The demultiplexer comprises: a) an inlet wave-guide (1); b) a plurality of outlet wave-guides (5i); c) an assembly (3) of adjacent integrated wave-guides functioning in the form of a phase network; d) a mode-expanding wave-guide (12) arranged at the inlet of the inlet connector (2) and connected to the inlet wave-guides (1); and e) a plurality of mode-reducing wave-guides (16i) arranged at the outlet of the outlet connector (4) and connected in each case to one of the outlet wave-guides (5i). The mode-expanding guide (12) and the aforementioned mode-reducing guides (16i) are of identical geometry with a width that varies linearly in accordance with their length, whereby the width of the aforementioned expanding and reducing guides at their connection to the associated connector is defined in order to optimize the width of the band passing through a channel while limiting the cross-talk between the outlet channels (5i) to a pre-determined level.

    INTEGRATED OPTICAL COUPLER WITH TWO INPUTS AND 2N OUTPUTS

    公开(公告)号:CA2139055A1

    公开(公告)日:1995-06-30

    申请号:CA2139055

    申请日:1994-12-23

    Applicant: CORNING INC

    Abstract: The invention comprises (a) a divider (D) by 2 of the optical power received at one input (E1, E2) and (b) two groups of single mode waveguides coplanar to the divider and symmetrical relative to the axis of symmetry (Z) of the divider (D), each group being composed of waveguide sections connected in tree and branch fashion by Y junctions (J11) between one input junction (J11, J12) connected to one of the outputs of the divider and N sections of waveguide difining N outputs (S1 to S16) of the coupler parallel to the axis of the divider. According to the invention, each of these input junctions (J11, J12) has a rectilinear input branch (B1) with predetermined length such that the transverse distribution of the optical power at the output of the rectilinear input branch (B1) is centered to a large degree on the axis of this input branch.

    Multiplexer/demultiplexer with flattened spectral response

    公开(公告)号:AU714783B2

    公开(公告)日:2000-01-13

    申请号:AU2841797

    申请日:1997-07-01

    Applicant: CORNING INC

    Inventor: TROUCHET DENIS M

    Abstract: A new multiplexer/demultiplexer (50) includes a compound focusing mechanism having adjacent focal points (F1,F2). Multiple images of one or more input pathways for each different wavelength signal are projected onto one or more output pathways. The resulting spectral response is flattened in the vacinity of the center wavelength of each different wavelength signal. The number and spacing of the focal points, as well as the mode field radii of the input and output pathways, can be optimized for desired combinations of channel bandwidth, insertion loss, and crosstalk.

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