communications components key features ? high reliability for network applications ? hermetically sealed ? small size ? 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. 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 fo r 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 voltage-controlled optical attenuators vcb series north america : 800 498-jdsu (5378) website : www.jdsu.com worldwide : +800 5378-jdsu
configuration 2 voltage-controlled optical attenuators optics stepper motor potentiometer m oto r a - m oto r a+ m oto r b - m oto r b + p o t + pot wipe r pot - case g r ou n d out in 9/125.900 m fiber nc nc note: nc = no connect nc nc
3 voltage-controlled optical attenuators specifications parameter specification optimized wavelength range 1525 to 1575 nm attenuation range >30 db attenuation resolution 0.1 db minimum insertion loss 1 straight-through channel 2 0.6 db with input monitoring tap detector 1.2 db attenuation temperature dependence 3 0.15 db attenuation wavelength dependence flatness greater of 0.1 or 0.05 plus 1% of attenuation ripple 2 0.6 db polarization dependent loss 1,4 <0.2 db polarization mode dispersion 0.10 ps return loss 1 >50 db response speed 5 100 ms attenuation setting repeatability 0.1 db attenuation setting backlash 0.2 db fiber type smf-28 with 900 m buffered jacket maximum optical power 50 mw dimensions (w x h x d) 6 25 x 12 x 50 mm operating temperature -5 to 70c storage temperature -40 to 85c 1. excluding connectors. 2. tapless model. 3. relative to 23c. 4. for attenuation up to 15 db over the optimized wavelength range. 5. considering 3 db attenuation change. 6. excluding strain relief and connector pins.
north america : 800 498-jdsu (5378) website : www.jdsu.com worldwide : +800 5378-jdsu ordering information for more information on this or other products and their availability, please contact your local jdsu account manager or jdsu directly at 1-800-498-jdsu (5378) in north america and +800-5378-jdsu worldwide or via e-mail at customer.service@jdsu.com. sample: vcb0+1nc1.0nc1.0nc voltage-controlled optical attenuators vcb 0 code tap 0 without tap s code length 1 1.0 1.0 m 2.0 2.0 m code connector type 1 nc no conn e ctor fp fc/hpc fa f c/apc sc sc/hpc s u sc/apc sp st/hpc code length 2 1.0 1.0 m 2.0 2.0 m +1nc . . code connector type 2 nc no conn e ctor fp fc/hpc fa f c/apc sc sc/hpc s u sc/apc sp st/hpc product specifications and descriptions in this document subject to change without notice. ? 2009 jds uniphase corporation 101 43041 002 1209 vcb.ds.cc.ae december 2009 smf-28 is a registered trademark of corning incorporated.
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