Mxn optical switch with improved stability

Details Mxn optical switch with improved stability Mxn optical switch with improved stability

G - Physics

02

B

G02B 26/08 (2006.01) G02B 6/35 (2006.01) H04Q 3/52 (2006.01)

Patent

CA 2330959

Optic switches manipulate an optical signal that has been expanded by a collimating lens. Switching is effected by introducing a prism between collimating lenses to redirect the optical signal to an alternative lens. The prism preferably has a cross-section defining a parallelogram, so that the optical signal is reflected twice within the prism to :minimize cross-sectional distortion and avoid spectral effects. A circuit provides feedback on the actual position of the relay and prism for fault detection and diagnosis.

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