The 4x4 switch is a very fast opto-mechanical switch working over the spectrum from 1250 nm to
1650nm. The component is designed for optical switching in fiber optical instruments and networks.
The highly reliable switching mechanism uses integrated micro mirrors and features fast switching
time below 1 ms and below 2.0 dB insertion loss. The miniature package withstands rugged
environments and is well suited for direct mounting on printed circuit boards. The switch is built by
cascading 1x2 and 2x2submodules which are qualified according to Telcordia GR 1221.
FEATURES
reliable
2.0 dB insertion loss
1 ms response time
non-latching
APPLICATIONS
Source Selection
Protection Switching
Monitoring
Wavelength provisioning
DESCRIPTION
The 4X4 switches are composed of an optical subsystem and an electrical driver interface. The
optical switching function is realized by silicon MEMS chips, on which a mirror can be moved in
and out of the optical path by electrostatic actuation. The 4x4 switching function is realized by
interconnecting 1x2 and 2x2 switch elements. In the latching SL variant a bistable suspension
mechanism keeps the last selected state in power off. In the non-latching SW variant the switch
elements return into the bar state when electrical power is removed.
TECHNICAL SPECIFICATIONS
Switch Unit Min Typ Max
Wavelength Range nm 1250 1650
Insertion Loss dB 1.0 2.0
Crosstalk dB 65 55
Backreflection dB 55 50
Polarisation Dependent Loss dB 0.07 0.15
Switching Time ms 0.5 1
Fiber Pigtail μμ 9/125/900
Durability cycles no wear out
Package
Power Consumption during switching mW 75 200
Supply voltage V 4.75 5.25 V
Logic level low V 0 0.5
Logic level high V 2.5 5.25
Operation Temperature °C 0 70
Storage Temperature °C -40 85
Size (L x W x H) mm 100x 100 x 8