1752A 1550 nm DOCSIS 3.1 DWDM DFB Laser Module DATASHEET | MARCH 2014 FIBER OPTICS The 1752A is a Dense Wavelength-Division Multiplexing (DWDM) laser module that is fully DOCSIS 3.1 compliant and can support operational bandwidth of up to 1.2 GHz. The 1752 laser platform has been designed specifically for CATV applications with a wide operating temperature range for reliable performance in harsh node environments and narrow linewidth transmitter designs. The 1752A DOCSIS 3.1 DWDM DFB laser module features low adiabatic chirp to maximize signal quality in short and long lengths of fiber. The laser’s excellent inherent linearity minimizes degradation of the broadcast signals caused by Quadrature Amplitude Modulated (QAM) channels. The versatile 1752A laser module reduces cable network architecture fiber needs and lessens equipment requirements in the hub. Applications Node Capability Narrow Transmitter Housing The 1752A is available in a wide range of ITU grid wavelengths with industrial temperature performance. Networks with Limited Fiber Architectures Using Separate Optical Wavelengths to Carry Targeted Services Performance Highlights Parameters Features DOCSIS 3.1 compliant 1.2 GHz Bandwidth Standard ITU Grid Wavelengths Min Typical Max Units Available Wavelengths (ITU Grid) 1526 - 1563 nm Optical Output Power (multiple versions) 6-10 - - mW Temperature Case Temperature Range -40 - +85 °C 40 MHz - 1.2 GHz Advanced Analog Chip Design Frequency Range: Reduces Equipment Requirements in the Hub Composite Second Order - - -38 dBc Composite Triple Beat - - -60 dBc 40 - 100 MHz/mA Telecordia Technologies® 468 Compliant Wide Temperature Range – Stable Even in Harsh Environments Adiabatic Chirp (measured at 500 MHz) | REV 2014.03 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. 1752A 1550 nm DOCSIS 3.1 DWDM DFB Laser Module FIBER OPTICS DATASHEET | MARCH 2014 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 Operating Case Temperature Storage Temperature Laser Forward DC Current Symbol Condition Min Max Units TC continuous -40 +85 °C TSTG - -40 +85 °C - - - 150 mA Reverse Voltage Photodiode VRPD - - 10 V Laser Reverse Voltage, DC VR - - 1 V - HBM: R = 1500 Ohm, C = 100 pF -500 500 V ITEC continuous -1.7 1.7 A PRFIN IF = IOP - 62 dBmV ESD TEC Current RF Input Power Electrical/Optical Characteristics Laser Temperature (TL) = 25°C, IF=IOP, Beginning of Life (BOL) Parameter Symbol Condition Min Typ Max Unit λOP IF = IOP, T = TOP 1525 - 1564 nm PO 1752xxxx-10 version 10 - - mW Slope Efficiency SE Points measure @ IF = ITH + 20 mA & IF = ITH + 60 mA 0.16 0.19 - mW/mA Optical Isolation ISO 30 - - dB Sidemode Suppression Ratio SMSR 35 - - dB - <-155 - dB/Hz - - 0.04 nm Wavelength 1 Optical Output Power IF = ITH + 70 mA, Laser Relative Intensity Noise Wavelength Drift as Case Temp. is Changed RIN λΔ T = 25 °C IF = 60 mA, T = TOP, Tc varied from minmax Threshold Current ITH - - 20 mA Operating Current IOP - - 120 mA Monitor PD Responsivity rPD VRM=5V 10 - 200 μA/mW Thermistor Resistance RTH TOP=25 °C 9.5 10 10.5 KΩ Thermistor Temperature Coefficient TCTH TOP=25 °C - -4.4 - %/°C TEC Current ITEC -40<TC<+85°C IF = 100 mA -1.5 - 1.6 A Fiber Length - May include splice 1.0 1.5 - m Fiber Buffer - - - 900 - μm - SMF28 - μm Fiber Core / Cladding - - 1. Measured Wavelength = Operating wavelength with a tolerance of ± 0.05 nm. | REV 2014.03 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. 1752A 1550 nm DOCSIS 3.1 DWDM DFB Laser Module FIBER OPTICS DATASHEET | MARCH 2014 RF Characteristic Parameter Frequency Range 1 Frequency Response Flatness RF Return Loss 1 1 Symbol Condition Min Typ Max Units F IF = 60 mA 40 - 1200 MHz | S21 | IF = 60 mA, TOP = 25 °C - ±1 ±2 dB - 16 - - dB - - -38 dBc - - -60 dBc 51 - - dB 40 - 100 MHz/mA - 25 - dB | S11 | Composite Second Order CSO Composite Triple Beat CTB Carrier to Noise Ratio CNR Adiabatic Chirp FM Nominal Input Impedance ZIN IF = IOP Note 2, 3 IF = IOP Note 2, 3 IF = IOP Note 2, 3 IF = 60 mA, T = 25 °C, measured at 500 MHz - 1. Measured on a 50Ω resistively matched system. 2. I OP is the bias point at which simultaneously the linearity, the min. optical power and the required operating wavelength, λOP are obtained. 3. Test Conditions: Fiber Launch Power: 10.0 ± 0.1 dBm. Peak OMI: 3.9% per channel (± 0.5 dB) Channel Load: 79 CW carriers from 55.25 MHz to 547.25 MHz Measurement Frequencies: CSO: 547.25 MHz; CTB: 295.25 MHz; CNR: 547.25 MHz Fiber Length: 25 km SMF-28 fiber Receiver Input Power: 0.0 ± 0.1 dBm Receiver responsivity: 0.86 mA/mW Min. Optical Reflection: -40 dBc Max. (excluding reflection from long-haul fiber) Electrical Schematics Figure 1. 1752A Laser Schematic Figure 2. 1752A Suggested Interface Circuit | REV 2014.03 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. 1752A 1550 nm DOCSIS 3.1 DWDM DFB Laser Module FIBER OPTICS DATASHEET | MARCH 2014 Outline Diagrams (Dimensions are in inches and millimeters) Pin Definitions Pin Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Thermistor Thermistor DC Laser Bias (-) MPD Anode (-) MPD Cathode (+) Thermal Electric Cooler (+) Thermal Electric Cooler (-) Case Ground Case Ground NC Laser Common (+), Case GND Laser Modulation (-) Laser Common (+), Case GND NC | REV 2014.03 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. 1752A 1550 nm DOCSIS 3.1 DWDM DFB Laser Module FIBER OPTICS DATASHEET | MARCH 2014 Ordering Code Definitions 1752A-19-BB-SC-10 Family name 1752A, Analog 1550 nm, DFB, DWDM ITU Wavelength 19 = ch.19 20 = ch.20 22 = ch.22 23 = ch.23 25 = ch.25 26 = ch.26 28 = ch.28 29= ch.29 31 = ch.31 32 = ch.32 34 = ch.34 35 = ch.35 37 = ch.37 38 = ch.38 40 = ch.40 41 = ch.41 43 = ch.43 44 = ch.44 46 = ch.46 47 = ch.47 49 = ch.49 50 = ch.50 52 = ch.52 53 = ch.53 55 = ch.55 56 = ch.56 58 = ch.58 59 = ch.59 61 = ch.61 62 = ch.62 64 = ch.64 21 = ch.21 24 = ch.24 27 = ch.27 30 = ch.30 33 = ch.33 36 = ch.36 39 = ch.39 42 = ch.42 45 = ch.45 48 = ch.48 51 = ch.51 54 = ch.54 57 = ch.57 60 = ch.60 63 = ch.63 Frequency Plan BB = Both Forward and Return Path Connectors SC = SC/APC Optical Power min. 10 = 10 mW | REV 2014.03 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. 1752A 1550 nm DOCSIS 3.1 DWDM DFB Laser Module FIBER OPTICS DATASHEET | MARCH 2014 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. All Versions of this laser are Class 3B laser product, tested according to IEC 60825-1:2007/EN 60825-1:2007 Single-mode fiber pigtail with SC/APC connectors (standard). Wavelength = 1.5 μm. Maximum power = 30 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 AVOID DIRECT EXPOSURE TO BEAM RADIATION Wavelength: 1.3 μm 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 μm | REV 2014.03 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.