1688 1310 nm DFB Laser Module DATASHEET | FEBRUARY 2012 FIBER OPTICS The 1688 1310 nm DFB laser modules are designed for both broadcast and narrowcast analog applications. The linear, OC-48 pinout compatible devices feature up to 31 mW of output power. The 1688 module is intended for OEM 1310 nm CATV transmitter designs optimizing cost-effectiveness and performance simultaneously. Performance Highlights Applications Parameters 1310 nm Forward Path/Return Path Wavelength Min Typical Max Units 1300 - 1320 nm Broadcast and Narrowcast Networks Long Distances Optical Output Power 6 - 31 mW High Optical Splits Operating Current 35 - 100 mA Temperature Range -40 - +85 C Frequency Range 5 - 1002 MHz Carrier to Noise Ratio (79 ch., NTSC) 50 51 - dB Composite Second Order (79 ch., NTSC) 57 - - dB Composite Triple Beat (79 ch., NTSC) 65 - - dB Features OC-48 Pinout Compatilble Negative Bias Telcordia TechnologiesTM 468 Compliant Cooled Up to 31 mW Wide Temperature Range, Stable Even in Harsh Environments RoHS Compliant | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 1688 1310 nm DFB Laser Module FIBER OPTICS DATASHEET | FEBRUARY 2012 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Symbol Condition Min Max Unit TC Continuous -40 +85 °C Tstg - -40 85 °C - - - 150 mA Operating Case Temperature Storage Temperature Range Laser Forward dc Current Photodiode Reverse Voltage VRPD - - 10 V Laser Reverse Voltage - - - 1 V ESD - HMB: R = 1500 Ohm, C = 100 pF -500 500 V ITEC Continuous -1.9 1.9 A TEC Current Electrical/Optical Characteristics Laser Temperature (TL) = 25oC, IF = IOP, Beginning of Life (BOL) Parameter Symbol Condition Min - Optical Power Range - - 6 6 mW option 6.5 8 mW option 8.5 - 9.9 10 mW option 10.5 - 11.9 12 mW option 12.5 - 13.9 Iop - Max - Optical Power Options 1300 Typ Wavelength Unit 1320 nm - 31 mW - 7.9 14 mW option 14.5 - 15.9 16 mW option 16.5 - - 20 mW option 20.5 - - 25 mW option 25.3 - - 28 mW option 28.3 - - 31 mW option 31 - - mW Slope Efficiency - - 0.25 - - mW/mA Optical Isolation ISO - 30 - - dB Sidemode Suppression Ratio SMSR - 35 - - dB Threshold Current ITH - - - 20 mA Operating Current IOP - Ith - 100 mA Monitor PD Responsivity rPD VRM=5V 10 - 300 μA/mW Thermistor Resistance RTH TOP=25 C 9.5 10 10.5 KOhm Thermistor Temp. Coefficient TCTH TOP=25 C - -4.4 - %/C TEC Current ITEC -40<TC<+85C, IF = 100 mA -1.5 - 1.6 A Fiber Length - May include optical splice. 1.0 1.5 - meter Fiber Buffer Fiber Core / Cladding - - - 900 9 / 125 - m m | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 1688 1310 nm DFB Laser Module FIBER OPTICS DATASHEET | FEBRUARY 2012 RF Characteristic Laser Temperature (TL) = 25oC, IF = IOP, Beginning of Life (BOL) Parameter Symbol Condition Min Typ Max Unit F - 5 - 1002 MHz Frequency Response S21 IF = 60 mA, 5 MHz-1002 MHz - ±0.5 - dB Carrier-to-Noise Ratio CNR OMI = 3.7%, 79 ch., NTSC 50 51 - dB Composite Second Order CSO OMI = 3.7%, 79 ch., NTSC 57 - - dB Composite Triple Beat CTB OMI = 3.7%, 79 ch., NTSC 65 - - dB Relative Intensity Noise RIN - -150 -155 - dB/Hz Frequency Range In order to prevent reflection-induced distortion, the laser must be connected to an optical cable having a return loss of at least 55 dB for discrete reflections and 30 dB for distributed reflections. Fiber Characteristics SC/APC Connector: Fiber Length: Fiber Type: Standard > 1.0 meter (1.5 meter typical), with respect to end of package wall. Single Mode Fiber, SMF-28 or compatible, 900 micron buffer, up to one splice allowed for optical Power models <16mW. The lossy splice location is defined as below. Electrical Schematics Figure 1. 1688 Laser Schematic Figure 2. 1688 Circuit Schematic | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 1688 1310 nm DFB Laser Module FIBER OPTICS DATASHEET | FEBRUARY 2012 Outline Diagram (Dimensions are in inches and mm) Pin Function 1 Thermistor 2 Thermistor 3 DC Laser Bias (-) 4 MPD Anode (-) 5 MPD Cathode (+) 6 Thermal Electric Cooler (+) 7 Thermal Electric Cooler (-) 8 Case Ground 9 Case Ground 10 NC 11 Laser Common (+) 12 Laser Modulation (-) 13 Laser Common (+) 14 NC | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 1688 1310 nm DFB Laser Module FIBER OPTICS DATASHEET | FEBRUARY 2012 Ordering Information 1688-xx Family Name Analog 1310 nm, DFB, Laser Optical Connector 06 = 6 mW 08 = 8 mW 10 = 10 mW 12 = 12 mW 14 = 14 mW 16 = 16 mW 20 = 20 mW 25 = 25 mW 28 = 28 mW 31 = 31 mW Example: 1688-10, DFB 1310nm Laser, 10 mW, SC/APC Connector. Laser Safety This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH Class 1 laser product. This device has been classified with the FDA/CDRH under accession number 0220191. Single-mode fiber pigtail with SC/APC connectors (standard). All Versions of this laser are Class 1 laser product, tested according to IEC 60825-1:2007/EN 60825-1:2007 Wavelength = 1.3 m. Maximum power = 50 mW. Because of size constraints, laser safety labeling (including an FDA class 1 label) is not affixed to the module, but attached to the outside of the shipping carton. Product is not shipped with power supply. Caution: Use of controls, adjustments and procedures other than those specified herein may result in hazardous laser radiation exposure. DANGER INVISIBLE LASER RADIATION AVOID DIRECT EXPOSURE TO BEAM Wavelength: 1.3 m Max. Output: 50 mW, Class 1 Laser Product DANGER INVISIBLE LASER RADIATION IS EMITTED FROM THE END OF FIBER OR CONNECTOR Avoid direct exposure to beam Do not view beam directly with optical instruments INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR Avoid exposure to beam Class 1 Laser Product IEC-60825-1:20007 Max. Output:50 mw Wavelength: 1.3 m | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.