1754C C-Band DWDM DFB Laser Component DATASHEET | AUGUST 2012 FIBER OPTICS The 1754C laser component is a Dense Wavelength Division Multiplexing (DWDM) laser for analog CATV applications. It features a distributed-feedback (DFB) device that has been designed specifically for radio frequency (RF) and CATV applications. The 1754C laser component has a wide temperature range for reliable performance in harsh node environments and narrow transmitter designs. It also 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. Applications The 1754C is available in all C-band ITU grid wavelengths. CATV Broadcast Networks Networks with Limited Fiber Archtectures Using Separate Optical Wavelengths to Carry Targeted Services Performance Highlights Min Available Wavelengths Features Operating Temperature Range Typical Max See page 3 Units nm +85 C -40 25 6 - 16 - - mW 40 - 100 MHz/mA - - -55 dBc - - -64 dBc 52 - - dB Standard ITU Grid Wavelengths Optical Output Power Advanced Analog Chip Design Adiabatic Chirp (measured at 500 MHz) Reduced Equipment Requirements in the Hub Composite Second-Order Distortion ( CSO ) OC-48 Pin Out Carrier-to-Noise Ratio ( CNR ) Telcordia Technologies™ 468 Compliant Frequency Range 5 - 2700 MHz Wide Temperature Range – Stable Even in Harsh Environments RF Return Loss 16 - - dB RoHS Compliant Composite Triple Beat Distortion ( CTB ) Noise and distortion performance above assume 79 channel NTSC loading with no QAM, 0 dBm received optical power. See following pages for complete specifications and operating/test conditions. | REV 2012.08 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. 1754C C-Band DWDM DFB Laser Component FIBER OPTICS DATASHEET | AUGUST 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 Operating Temperature Range Storage Temperature Range Symbol Condition Tc Continuous Min Max -40 +85 Unit °C TSTG Continuous -40 +85 °C Average RF Input Power - 60 seconds - 62 dBmV Laser Forward DC Current - Continuous - 150 mA Photodiode Reverse Voltage VMPD Continuous - 10 V Laser Reverse Voltage, DC - Continuous - 1 V ESD - HBM: R = 1500 Ohm, C = 100pF -500 500 V ITEC Continuous -1.5 1.5 A TEC Current Electrical/Optical Characteristics Laser Temperature (TL) = 25oC, IF=IOP, Beginning of Life (BOL) Parameter Symbol Condition Min Typ Max Unit TC - -40 25 +85 C Optical Output Power PO 6 mW version 8 mW version 10 mW version 16 mW version 6 8 10 16 - 7.9 9.9 15.9 19.9 mW Threshold Current ITH 25C, BOL Slope Efficiency Operating Current IOP Operating Voltage Operating Case Temperature Wavelength Drift over TC Range Laser Adiabatic Chirp Optical Return Loss Sidemode Suppression Ratio - - 20 mA .07 - - W/A BOL - - 120 mA VOP 25C, BOL - - 2.5 ITU Grid See page 3 V nm OP If = 60 mA, T = TOP - - 40 pm FM IF = 60 mA, TOP = 25C @ 500 MHz 40 - 100 MHz/mA ORL - SMSR 40 - - dB 30 - - dB Optical Isolation ISO 25C Relative Intensity Noise RIN IF = ITH + 70 mA 30 - - dB - -155 dB/Hz Nominal Input Impedance ZIN - 22 25 27 MPD Responsivity rPD VRM = 5V 10 - 200 μA/mW MPD Dark Current ID IOP = 0 mA VRM = 5V, TOP = 25C 0.2 A MPD Current Relative to Output Power - VRM = 5V, TOP = 25C 10 - 200 mA/W RTH TOP = 25 C 9.5 10 10.5 kΩ Thermistor Temp. Coefficient TCTH TOP = 25 C - -4.4 - %/C TEC Voltage VTEC - -2.5 - 3.8 V Thermistor Resistance | REV 2012.08 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. 1754C C-Band DWDM DFB Laser Component FIBER OPTICS DATASHEET | AUGUST 2012 RF Characteristic Laser Temperature (TL) = 25oC, IF=IOP, Beginning of Life (BOL) Parameter Symbol Condition Min Typ Max Units Carrier-to-Noise Ratio CNR 79 NTSC, 3.3% OMI 1 m fiber min, 4.2 MHz NBW 52 - - dB Composite Second-Order CSO 79 NTSC, 3.3% OMI 1 m fiber min -55 dBm -64 dBc 1 dBp-p 4 dBp-p - dB Composite Triple Beat CTB Frequency Response Flatness |S21| RF Return Loss resistive match 50 to 25 pad 79 NTSC, 3.3% OMI 1 m fiber min - 40 MHz to 890 MHz IF = 60 mA, TOP = 25C - - 5 MHz to 2700 MHz IF = 60 mA, TOP = 25C 5 MHz to 2700 MHz IF = 60 mA, TOP = 25C |S11| 16 - 79 channel loading with 3.3% OMI and 1 km fiber length. 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. ITU Grid Channel Numbering Channel Wavelength (nm) Channel Wavelength (nm) Channel Wavelength (nm) 62 1527.99 47 1539.77 32 1551.72 61 1528.77 46 1540.56 31 1552.52 60 1529.55 45 1541.35 30 1553.33 59 1530.33 44 1542.14 29 1554.13 58 1531.12 43 1542.94 28 1554.94 57 1531.90 42 1543.73 27 1555.75 56 1532.68 41 1544.53 26 1556.56 55 1533.47 40 1545.32 25 1557.36 54 1534.25 39 1546.12 24 1558.17 53 1535.04 38 1546.92 23 1558.98 52 1535.82 37 1547.72 22 1559.79 51 1536.61 36 1548.51 21 1560.61 50 1537.40 35 1549.32 20 1561.42 49 1538.19 34 1550.12 19 1562.23 48 1538.98 33 1550.92 18 1563.05 | REV 2012.08 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. 1754C C-Band DWDM DFB Laser Component FIBER OPTICS DATASHEET | AUGUST 2012 Electrical Schematics 1 NC 10K 14 ISOLATOR 13 2 12nH RF CHOKE 3 0.01uF 22 LD 4 12 100 5 11 10 MPD 6 (+) 9 CASE GND 7 (-) TEC 8 Figure 1. 1754C Laser Simplified Schematic Figure 2. 1754C Circuit Schematic 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 2012.08 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. 1754C C-Band DWDM DFB Laser Component FIBER OPTICS DATASHEET | AUGUST 2012 Outline Diagram (Dimensions are in inches and millimeters) Fiber type: 0.9 mm O.D. jacketed single mode 9/125 mm (SMF-28) Fiber length: 130 cm + 10 cm, measured as shown below Nominal pin lead length: 0.2 inch (from external package wall) 130 + 10 cm Conn | REV 2012.08 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. 1754C C-Band DWDM DFB Laser Component FIBER OPTICS DATASHEET | AUGUST 2012 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 0220309. All Versions of this laser are Class 1 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 m. 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 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 2012.08 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. 1754C C-Band DWDM DFB Laser Component FIBER OPTICS DATASHEET | AUGUST 2012 Ordering Code Definitions 1754C – ww - xx – yy – zz Family Name Analog 1550 nm, DFB, Laser ITU Channel Wavelengths ww = 18: Channel 18, 1563.05 nm ww = 19: Channel 19, 1562.23 nm ….. ww = 62: Channel 62, 1527.99 nm CATV Channel Plan xx = BB: Both Forward and Return Connectors yy = FC: FC/APC yy = SC: SC/APC Minimum Optical Power zz = 06: 6 mW zz = 08: 8 mW zz = 10: 10 mW zz = 16: 16 mW Example 1754C-32-BB-SC-08: 1754C, ITU channel 32, 1551.72 nm, SC/APC connector, 8 mW minimum optical power. | REV 2012.08 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.