Apparatus and method facilitating optical alignment of a bulk optical multiplexer/demultiplexer
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United States of America Patent
Stats
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Jul 16, 2002
Grant Date -
N/A
app pub date -
Oct 31, 2000
filing date -
Oct 31, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A bulk optic (de)multiplexer for fiber optic communications systems includes a diffraction grating having a diffraction surface, a waveguide array including a plurality of waveguides having an input/output end for emitting and receiving optical signals, and a focusing optic in optical communication between the diffraction grating and the waveguide array along an optical axis. The focusing optic focuses beams from the diffraction surface of the grating for optical coupling with the input/output ends of the waveguides. The (de)multiplexer further includes a frame. A fixed mount is provided between the focusing optic and the frame. A first adjustable mount is provided between the waveguide array and the frame and a second adjustable mount is provided between the diffraction grating and the frame. Preferably, the optical axis corresponds to a Z axis of orthogonal X, Y, Z axes and the waveguides of the waveguide array are aligned with the input/output ends along an input/output axis. The first adjustable mount is configured to provide for linear movement of the waveguide array along the Z axis and movement of the input/output axis within a plane parallel to the X, Y axes. The second adjustable mount is preferably configured to provide only for gimbaled movement of the grating about the point on the diffraction surface of the grating intersecting the optical axis. A method of optically aligning a (de)multiplexer as described above includes affixing the focusing optic to the frame with the focusing optic defining the optical axis, moving the waveguide array relative to the focusing optic only linearly along the optical axis and moving the grating only by rotating the grating about three orthogonal axes at a point on the grating intersected by the optical axis.

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- 15 United States
- 10 France
- 8 Japan
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ZOLO TECHNOLOGIES INC | 410 S ARTHUR STREET LOUISVILLE CO 80027 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Harr, Robert | Arvada, CO | 9 | 24 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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