COMMUNICATIONS COMPONENTS

Key Features

• High reliability for network applications

• Hermetically sealed

• Small size

• Integrated optical tap (optional)

• Potentiometer feedback to monitor attenuator settings

• Mountable on printed circuit board (PCB)

• Latching capability

• Single or multichannel applications

• Low loss

The JDSU VCB Series of voltage-controlled optical attenuators is specifically

designed for highly reliable optical power control in network applications. These

devices are available with an input tap for optical monitoring purposes,

eliminating the need for external tap couplers. They are Telcordia GR-1221

compliant, through the use of hermetic sealing technology, and feature latching

capabilities. They show excellent optical performance over the C and L bands.

Each attenuator uses a stepper motor driven by an external IC driver to achieve

fine attenuation resolution. The driver for the stepper motor is user-supplied to

move the motor up or down in uniform step sizes. Latching operation is a

standard feature; upon removal of the drive voltage, the most recent attenuation

setting is retained.

JDSU attenuators withstand the diverse environmental conditions encountered in

network applications. They ensure high reliability, particularly during long

quiescent periods.

Applications

• Power equalization in multichannel

optically amplified networks

• Gain-tilt control in optical amplifiers

• Power control into narrowband

wavelength division multiplexers

(WDMs) and configurable networks

• Power control into receivers

• Local power monitoring and

feedback attenuator settings use

integrated input tap

Voltage-Controlled Optical Attenuators

VCB Series

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