Electronically Variable Optical Attenuators EVOA Series Product Description Oplink’s electronically variable optical attenuator (EVOA) is a high performance opto-mechanical device. EVOA operates by moving an obstructing element into the optical beam and the position of the obstructing element can be adjusted by an integrated, electronically controlled step motor, resulting in fine tuning of attenuation. Oplink’s EVOA features a large dynamic attenuation range of >30dB and an excellent optical performance over C- or L-band. Its latching operation retains recent attenuation setting upon removal of drive voltage. Applications include pre-emphasis attenuation, detector saturation control, in-line power equalization and amplifier power control applications. Also, it can be used to extend the dynamic range of optical measurement instruments. Oplink’s EVOA is designed to withstand the diverse environmental conditions and compliance to the Telcordia standard GR-1221. Oplink can provide customized designs to meet specialized feature applications. Also, Oplink offers modular assemblies that integrate other components to form a full function module or subsystem. Performance Specificationns Parameter Min [1] 0 Attenuation range Temperature dependence of attenuation Max 1525 ~ 1570 or 1570 ~1610 Operating wavelength range Insertion Loss Typical [2] Unit nm Features 1.0 dB 30 dB Operates over C or L Band 0.15 dB Wavelength dependence of attenuation 0~15dB Attenuation 15~30dB attenuation 0.2 0.3 dB Polarization dependence of attenuation 0 to15 dB > 15 dB 0.15 0.2 dB 0.1 ps PMD Return Loss 40 [1] Low Insertion Loss and PDL Latching Capability PCB Mountable dB Resolution 0.15 dB Applications Repeatability 0.2 dB Pre-emphasis Attenuation 0.3 dB Detector Input Power Control 0.2 sec In-line Power Equalization 100 mW Gain Control in Optical Amplifiers Back lash Response speed [3] Optical power Operating Temperature -5 to +70 °C On/Off Switch Storage Temperature -40 to +85 °C Instrumentation, Testing and Measurement Fiber type SMF-28 POT resistance 9 Package Dimensions Notes: 1) Excluding connectors. 10 11 P2: 50.0 (L) ×25.0 (W) × 12.0 (H P3: 45.0 (L) ×18.0 (W) × 12.0 (H) 2) Relative to 23°C. KΩ mm 3) At 3 dB attenuation change. R09.20090302 Electronically Variable Optical Attenuators EVOA Series Mechanical Drawing / Package Dimensions (dimension in mm) 2) Mini Package Type P3 46335 Landing Pkwy Fremont, CA 94538 Tel: (510) 933-7200 Fax: (510) 933-7300 Email: [email protected] • www.oplink.com 1) Standard Package Type P2 Electrical Connector Configuration P2 Pin# Pin1 Pin2 Pin3 Pin4 Function Motor Phase A- Motor Phase B+ Motor Phase B- Motor Phase A+ Electrical Connector Configuration P3 Pin5 Pot Wiper Pin6 Pot +V Pin7 Pot GND Pin8 Pin# NC Function Pin1 Pot GND Pin2 Pin3 Pin4 Pin5 Pin6 Pin7 Pot wiper Motor Phase A- Motor Phase B+ Motor Phase B- Motor Phase A+ Pot +V Ordering Information Oplink can provide a remarkable range of customized optical solutions. For detail, please contact Oplink’s OEM design team or account manager for your requirements and ordering information (510) 933-7200. 0 EVOA 0 0 Operating Wavelength Package Type Fiber Length C Band = 1550 L Band = 1600 P2 = 2 P3 = 3 0.5meter= H 1.0meter= 1 1.5meter= 5 2.0meter= 2 Fiber Type SMF-28 250µm =1 SMF-28 w/ 900µm loose tube =2 Connector Type None = 1 FC/PC=2 FC/SPC=3 FC/APC=4 SC/PC=5 SC/SPC=6 SC/APC=7 ST=8 LC=9 MU=A R09.20090302 Product Lines: Mux/Demux Switching/Routing Coupling/Splitting Monitoring/Conditioning Amplification Transmission Interconnect RGB Laser Modules