Hitachi, Ltd.

Yasuhiro Itou

Atsushi Kazama

Kazuyuki Fukuda

Masaya Horino

Toshiya Shiramatsu

Tadaaki Ishikawa

A small-size thin-bodied 3-dimensional matrix switch using a micro mirror array, comprises a collimator array with a plurality of collimators coupled to optical fibers, a mirror array with a plurality of movable mirrors, in which each movable mirror has light from a first collimator of the collimator array optically coupled thereto, a first mirror which has the light from the mirror of the mirror array optically coupled thereto, a second mirror which has the light from the first mirror optically coupled thereto, and a second collimator of the collimator array, which has the light from the second mirror coupled thereto, wherein the light leaving the second mirror passes the first mirror and the mirror array and optically couples to the second collimator.

Optical switch and optical switch system

A beam direction module which can be applied to an optical switch, comprising: a collimator support member; a first mirror substrate including first micro-mirrors, and first windows through which beams can pass; a first electrode substrate including first mirror driving electrodes, and second windows through which beams can pass; a first spacer; a second mirror substrate including second micro-mirrors, and third windows through which beams can pass; a second electrode substrate including second mirror driving electrodes, and fourth windows through which beams can pass; a second spacer; and an inter-mirror spacer, wherein the first electrode substrate, the first spacer, the first mirror substrate, the inter-mirror spacer, the second mirror substrate, the second spacer and the second electrode substrate are stacked successively on the collimator support member and fixed between caps and the collimator support member while pins protruding from the collimator support member are inserted into alignment through-holes formed.

Beam direction module and optical switch using the same

In a three-dimensional multi-channel optical switch using biaxially movable mirrors, a mirror packing density is improved to support an increased number of channels. The three-dimensional optical switch comprises a fiber collimator array, and a first mirror array and a second mirror array disposed in close proximity to a beam emission surface of the fiber collimator array. The first mirror array has arranged thereon a plurality of first mirrors each having a single rotation axis and a plurality of first windows. The second mirror array has arranged thereon a plurality of second mirrors each having a single rotation axis orthogonal to the first rotation axis and a plurality of second windows. A beam emitted from a fiber collimator passes through the first window, reflects on a fixed mirror and a movable mirror in order, passes through the second window, and exits to the outside.

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Kumagaya, Japan

Yasuhiro Itou