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| COMMUNICATIONS COMPONENTS Forward and Return Path Analog CATV Detector Modules EPM 7xx Series Key Features * Electro-optical - Low intermodulation distortion - High responsivity - Low back reflection * Packaging - Single mode 900 m fiber with or without a connector - Single mode 250 m fiber without a connector Applications * AM fiber optic CATV receivers to 550 MHz (EPM 705) and 860 MHz (EPM 745) * Multi-channel fiber optic transmission The EPM 7xx series are high quality analog photodetectors designed for forward path (EPM 745) and return path (EPM 705) AM CATV applications. These coaxial modules are optically aligned to optimize performance and balance the parameters of responsivity, distortion and back reflection. The photodetector die is fabricated with a proprietary InGaAs process in our wafer fab and assembled into a hermetically-sealed package with an antireflectivecoated lens. A stainless steel bushing is used to actively couple the fiber to the package. The fiber is reinforced with a rubber boot which relieves fiber bending stresses. The EPM 7xx series can be produced without a connector or with a variety of industry standard connectors. They are also available with a mounting bracket which allows both vertical panel mounting and horizontal flush-to-board mounting. NORTH AMERICA: 800 498-JDSU (5378) WORLDWIDE: +800 5378-JDSU WEBSITE: www.jdsu.com FORWARD AND RETURN PATH ANALOG CATV DETECTOR MODULES 2 Dimensions Diagram (Specifications in mm unless otherwise noted.) EPM 705 with Dual Mount Bracket EPM 705 without Dual Mount Bracket EPM 745 with Dual Mount Bracket EPM 745 without Dual Mount Bracket FORWARD AND RETURN PATH ANALOG CATV DETECTOR MODULES 3 Figure 1: EPM 705 Dark Current vs. Reverse Bias 1E-05 85 C 1E-06 65 C 45 C 1E-07 Current (A) 25 C Current (A) 1E-09 1E-08 Figure 2: EPM 745 Dark Current vs. Reverse Bias 1E-08 1E-10 80 C 60 C 1E-11 40 C 20 C 0 C 1E-09 1E-10 1E-11 0 5 10 15 20 25 30 Reverse Voltage (V) 1E-12 0 5 10 15 20 25 Reverse Voltage (V) Figure 3: EPM 705 Capacitance vs. Reverse Bias 23C 1.4 1.2 Figure 4: EPM 745 Capacitance vs. Reverse Bias 23C 0.5 0.4 1.0 Capacitance (pF) Capacitance (pF) 0.8 0.6 0.4 0.2 0.0 0 2 4 6 8 10 12 0.3 0.2 0.1 0.0 0 2 4 6 8 10 12 Reverse Voltage (V) Reverse Voltage (V) FORWARD AND RETURN PATH ANALOG CATV DETECTOR MODULES 4 Figure 5: EPM 745 IM2 vs. Input Optical Power Bias = -12V; Mod. Index = 0.7 Typical Values -65 -65 Figure 6: EPM 745 IM2 vs. Bias Voltage Input Power = 0 dBm; Mod. Index = 0.7 Typical Values Intermodulation Distortion (dBc) Intermodulation Distortion (dBc) -70 -70 -75 -75 -80 -80 -85 -90 -95 -85 -90 -4 -2 0 2 4 6 8 0 2 4 6 8 10 12 14 Input Power (dBm) Reverse Voltage (dBm) Figure 7: EPM 705/745 Typical Spectral Response 23 C 1.0 EPM 745 Equivalent Circuit 0.8 Responsivity (A/W) 0.6 0.4 0.2 0.0 800 1000 1200 1400 1600 1800 Wavelength (nm) FORWARD AND RETURN PATH ANALOG CATV DETECTOR MODULES 5 Specifications (Temperature = 25C, VR = 5 V unless noted. All specifications without connector.) Parameter Responsivity Distortion product IM2 Back reflection Dark current Capacitance3 Bandwidth4 Single mode fiber 900 m 8.7/125 m core/cladding Conditions = 1310 nm = 1550 nm Minimum Minimum Maximum Maximum Maximum Maximum Typical Minimum Maximum EPM 705 0.80 A/W 0.85 A/W -70 dBc 1 -40 dB 5.0 nA 0.75 pF 2.0 GHz 1.0 m 1.5 m EPM 745 0.85 A/W 0.90 A/W -75 dBc 2 -45 dB 1.0 nA 0.35 pF 3.0 GHz 1.0 m 1.5 m 1. IM2 measured at VR = 12 V, Pavg = 0 dBm, MI = 0.7, Rload = 50 , f1 + f2 = 324.25 MHz, f1 - f2 = 54.25 MHz. 2. IM2 measured at VR = 12 V, Pavg = 0 dBm, MI = 0.7, Rload = 50 , f1 + f2 = 850.25 MHz, f1 - f2 = 50.25 MHz. 3. Measured with case grounded. 4. -3 dB point into a 50 load. Maximum Ratings Parameter Forward current1 Reverse current2 Reverse voltage Power dissipation Operating case temperature Soldering temperature Storage temperature Minimum Minimum Minimum Minimum Minimum Maximum Minimum Minimum Maximum Specification 10 mA 10 mA 25 V 100 mW -40C 85C 260C -40C 85C 1. Under forward bias, current at which device may be damaged. 2. Under reverse bias, current at which device may be damaged. FORWARD AND RETURN PATH ANALOG CATV DETECTOR MODULES 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: EPM 705 900 FCA DMB EPM 7 + Code 05 45 Model Return path CATV module Forward path CATV module + Code 250 900 + Buffer 250 m buffer 900 m buffer + Code 0 DMB Bracket No bracket with dual mount bracket Code NC FCS FCA SCS SCA Connector No connector FC/SPC connector FC/APC connector SC/SPC connector SC/APC connector Precautions for Use ESD protection is imperative. Use of grounding straps, anti-static mats, and other standard ESD protective equipment is recommended when handling or testing an InGaAs PIN or any other junction photodiode. Soldering temperature of the leads should not exceed 260 C for more than 10 seconds. Fiber pigtails should be handled with less than 10 N pull and with a bending radius greater than 1 inch. 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)2006 JDS Uniphase Corporation. All rights reserved. 30137543 Rev. 001 05/06 EPM7XX.DS.CC.AE NORTH AMERICA: 800 498-JDSU (5378) WORLDWIDE: +800 5378-JDSU WEBSITE: www.jdsu.com |
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