JDS Uniphase SK Series, User Manual

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General Information and Specifications
General Information
This user’s manual for the SK Series Fiberoptic Switch Module contains complete operating
instructions.
The SK Series Fiberoptic Switch Module (Figure 1) is a modular 1xN controllable switch. The
switch is microprocessor-controlled via a 26-pin parallel interface. It connects a single fiberoptic
channel to any of N (up to 26) channels. Small and rugged, the SK Series switch module is
designed to be used in embedded applications and is available in both single-mode and
multimode versions.
Figure 1: SK Series Fiberoptic Switch
The operation of the switch is based on JDS Uniphase’s proven expanded beam lens
technology using a precision stepper motor to align optical channels. The standard single-pole
configuration consists of a single common port that can be aligned to any one of 26 ports. In
electrical terms, the SK switch is a single-pole, 26-throw switch. The switching mechanism
implements collimating lenses that eliminate problems associated with modal noise and provide
low insertion loss and high repeatability. The use of collimating lenses minimizes insertion loss
and enhances stability and repeatability. The design is optimized for high return loss.
Single-Common (SK-C) Switch Configuration
Figure 2 shows the single-common C configuration of the switch.
Figure 2: SK-C Switch Configuration