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Multi-wavelength cross-connect optical switch
| Details |
Inventors: Solgaard, Olav; Heritage, Jonathan P.; Bhattarai, Amal R.;
Assignee: The Regents of the University of California (Oakland, CA)
Primary Examiner: Lee; John D.
Assistant Examiner:
Attorney, Agent or Firm: O'Banion; John P.
A cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches using two-dimensional arrays of micromachined, electrically actuated, individually-tiltable, controlled deflection micro-mirrors for providing multiport switching capability for a plurality of wavelengths. Using a one-dimensional micromirror array, a fiber-optic based MEMS switched spectrometer that does not require mechanical motion of bulk components or large diode arrays can be constructed with readout capability for WDM network diagnosis or for general purpose spectroscopic applications. |
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DETAILED DESCRIPTION It is therefore an object of this invention to provide an improved multi-wavelength cross-connect optical switch which is scalable in port number beyond 2.
times.
2.
Another object of the invention to provide such an optical switch which can be produced by known technology.
Another object of this invention to provide such an optical switch with high performance characteristics such as basic low loss, high cross-talk rejection and flat passband characteristics.
Another object of the invention is to provide a fiber-optic switch using two arrays of actuated mirrors to switch or rearrange signals from N input fibers onto N output fibers, where the number of fibers, N, can be two, or substantially larger than 2.
Another object of the invention is to provide a fiber-optic switch using 1-D arrays of actuated mirrors.
Another object of the invention is to provide a fiber-optic switch using 2-D arrays of actuated mirrors.
Another object of the invention is to provide a fiber-optic switch using mirror arrays (1-D or 2-D) fabricated using micromachining technology.
Another object of the invention is to provide a fiber-optic switch using mirror arrays (1-D or 2-D) fabricated using polysilicon surface micromachining technology.
Another object of the invention is to provide a fiber-optic switch using arrays (1-D or 2-D) of micromirrors suspended by torsion bars and fabricated using polysilicon surface micromachining technology.
Another object of the invention is to provide a fiber-optic switch with no lens or other beam forming or imaging optical device or system between the mirror arrays.
Another object of the invention is to provide a fiber-optic switch using macroscopic optical elements to image or position the optical beams from the input fibers onto the mirror arrays, and likewise using macroscopic optical elements to image or position the optical beams from the mirror arrays onto the output fibers.
Another object of the invention is to provide a fiber-optic switch using microoptics to image or position the optical beams from the input fibers onto the mirror arrays, and likewise using microoptics to image or position the optical beams from the mirror arrays onto the output fibers
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