Optical switch

Details Optical switch Optical switch

2006-02-21

2006-02-21

Healy, Brian (Department: 2883)

Optical waveguides

With optical coupler

Switch

C385S018000

Reexamination Certificate

active

07003191

ABSTRACT:
An optical switch is provided in which the difference of the optical loss due to the difference of optical path can be reduced. The optical switch comprises the first switching parts2A–2D and the second switching parts3A–3D. The first switching parts2A–2D each comprise: a planar waveguide device4in which four coupling optical waveguides5a–5dand an input optical waveguide6are provided; and reflection mirrors8a–8dfor reflecting a light signal incident from the input optical waveguide6to the respective coupling optical waveguides5a–5d, respectively. The second switching parts3A–3D each comprise: a planar waveguide device9in which coupling optical waveguides10a–10dand an output optical waveguide11are provided; and reflection mirrors13a–13dfor reflecting a light signal incident from the respective coupling optical waveguides10a–10dto the output optical waveguide11. The optical switch is provided with16optical fibers20for connecting the coupling optical waveguides5a–5dof the first switching parts2A–2D to the different second coupling optical waveguides10a–10dof the second switching parts3A–3D, respectively.

REFERENCES:
patent: 6243178 (2001-06-01), Suemura et al.
patent: 6587610 (2003-07-01), Ao
patent: 6738540 (2004-05-01), Marom
patent: 6907154 (2005-06-01), Oikawa et al.
Dellmann, L., et al. “4×4 Matrix Switch Based in Mems Switches and Integrated Waveguides.” The 11th International Conference on Solid-State Sensors and Actuators, Munich Germany, Jun. 10-14, 2001, pp. 1332-1335.
Lin, L.Y., et al. Free-Space Micromachined Optical Switches with Submillisecond Switching time for Large Scale Optical Crossconnects. IEEE Photonics Technology Letters, vol. 10, No. 4, Apr., 1998, pp. 525-527.

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