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| COMMUNICATIONS COMPONENTS Voltage-Controlled Optical Attenuators VCB Series 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 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 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. NORTH AMERICA: 800 498-JDSU (5378) WORLDWIDE: +800 5378-JDSU WEBSITE: www.jdsu.com VOLTAGE-CONTROLLED OPTICAL ATTENUATORS 2 Configuration Output Detector + Output Detector Motor A Motor A+ Motor B Motor B + POT + POT WIPER POT Input Detector Input Detector Case Ground Potentiometer Stepper Motor Optics OUT 9/125.900 m Fiber IN VOLTAGE-CONTROLLED OPTICAL ATTENUATORS 3 Specifications Parameter Optimized wavelength range Attenuation range Attenuation resolution Minimum insertion loss1 Straight-through channel2 With input monitoring tap detector Attenuation temperature dependence3 Attenuation wavelength dependence Flatness Ripple2 Polarization dependent loss1,4 Polarization mode dispersion Return loss1 Response speed5 Attenuation setting repeatability Attenuation setting backlash Fiber type Maximum optical power Dimensions (W x H x D)6 Operating temperature Storage temperature 1. Excluding connectors. 2. Tapless model. 3. Relative to 23 C. 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. Specification 1525 to 1575 nm (L-band version available) >30 dB 0.1 dB 0.6 dB 1.2 dB 0.15 dB Greater of 0.1 or 0.05 plus 1% of attenuation 0.6 dB <0.2 dB 0.10 ps >50 dB 100 ms 0.1 dB 0.2 dB SMF-28 with 900 m buffered jacket 50 mW 25 x 12 x 50 mm -5 to 70 C -40 to 85 C VOLTAGE-CONTROLLED OPTICAL ATTENUATORS 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 VCB Code 0 1 +1NC Tap Without taps With input tap only Code 1.0 2.0 . Length 1 1.0 m 2.0 m Code NC FP FA SC SU SP Connector Type 1 No connector FC/HPC FC/APC SC/HPC SC/APC ST/HPC Code 1.0 2.0 . Length 2 1.0 m 2.0 m Code NC FP FA SC SU SP Connector Type 2 No connector FC/HPC FC/APC SC/HPC SC/APC ST/HPC SMF-28 is a registered trademark of Corning Incorporated. All statements, technical information and recommendations related to the products herein are based upon information believed to be reliable or accurate. However, the accuracy or completeness thereof is not guaranteed, and no responsibility is assumed for any inaccuracies. The user assumes all risks and liability whatsoever in connection with the use of a product or its application. JDSU reserves the right to change at any time without notice the design, specifications, function, fit or form of its products described herein, including withdrawal at any time of a product offered for sale herein. JDSU makes no representations that the products herein are free from any intellectual property claims of others. Please contact JDSU for more information. JDSU and the JDSU logo are trademarks of JDS Uniphase Corporation. Other trademarks are the property of their respective holders. (c)2007 JDS Uniphase Corporation. All rights reserved. 10143041 Rev. 001 10/05 VCB.DS.CC.AE NORTH AMERICA: 800 498-JDSU (5378) WORLDWIDE: +800 5378-JDSU WEBSITE: www.jdsu.com Reviewed February 2007 |
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