download symbol WHITE PAPERS

download symbol2016 - Simultaneous blood flow and blood oxygenation measurements using a combination of diffuse speckle contrast analysis and near-infrared spectroscopy

download symbol2014 - Towards telecommunication payloads with photonic technologies

download symbol2013 - Trimodal detection of early childhood caries using laser light scanning and fluorescence spectroscopy: clinical prototype

download symbol2013 - A fiber-optic system for dual-modality photoacoustic microscopy and confocal fluorescence microscopy using miniature components

download symbol2012 - Miniaturized all-optical photoacoustic microscopy based on microelectromechanical systems mirror scanning

download symbol2011 - Effects of Radiation on MEMS

download symbol2011 - Digital optical tomography system for dynamic breast imaging

download symbol2006 - A flexible telecom satellite repeater based on microwave photonic technologies


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The SX Series are miniature opto-mechanical switches for fiber optic communication systems and submodules. The switch is available in latching variants, with 1x1, 2x1, 2x2. The switch offers smallest size, ease of integration and the established reliability of Sercalo’s MEMS components.

The package is one of the smallest in the industry. It is optimized for low cost production while maintaining high reliability. The component meets Telcordia GR1221 quality standards.


In the SX Series the optical switching function is realised by a silicon MEMS chip, on which a mirror can be moved in and out of the optical path by electrostatic actuation. The miniature SX switch is available as latching variant where a bistable suspension mechanism keeps the last selected state in power off. The non-latching type (i.e. SXNA) is not recommended for new designs.

To operate the switch 5V and 0V are applied on pins 1 and 2, which are used by the internal DC-DC converter to supply a high voltage for the actuator control. CMOS or TTL logic levels on pins 3-4 control the electrostatic actuator. To set the switch state pin 3 respectively pin 4 are set to logic high (5V) for 20 ms and the corresponding switch state is selected. At rest pins 3 and 4 should be pulled to 0 V and must not be floating.

description mini switches SXLA SERIES