Switch Module - Large Channel Count (Discontinued)
SKB series
The VIAVI SKB series controllable optical switch is designed to connect a single optical channel to any of N channels. It is the enhanced version of our legacy SK/SP series switch modules and is the only stepper-motor based switch module available in this market with a lifetime greater than 120 million cycles. Each module can accommodate multiple 1 x N switches that can be internally interconnected to provide various types of configurations, such as blocking M x N, where M represents inputs and N represents outputs, or each module can operate as independent switches. The switch module is available in two package sizes:
- Package size 1 can accommodate up to two switches with total channel count up to 50.
 - Package size 2 can accommodate up to four switches with a total channel count up to 100.
 
The operation of the switch is based on proven JDS Uniphase's expanded beam lens technology utilizing a precision stepper-motor to align optical channels. The use of collimating lenses minimizes insertion loss (IL). The design is optimized for high return loss (RL). The switch is microprocessor controlled via a parallel interface or addressable serial interface (RS-485). It is designed for mounting on a printed circuit board or within a module for OEM applications.
Applications
- Remote fiber test systems (RFTS)
 - Fiber network restoration
 - Fiberoptic component test and measurement
 - Integrated module solution designed for integration into new products
 - OEM applications
 - Sensing applications
 
Key Features
- Lifetime greater than 120 million cycles
 - Up to 100 channels
 - Up to 4 switches in a module
 - Internal switches can be factory configured to create various configurations, such as blocking MxN
 - Latching version available
 - Queriable switch position and configuration
 - Status and alarm registers
 - Highly customer-configurable to assist in swapping spares or changing channel order
 - Operating temperature of - 35 to 75 °C for steppermotor-based switches
 - Typical IL 0.5 dB