1764 1550 nm C-Band DWDM DFB Laser Module DATASHEET | JULY 2013 FIBER OPTICS The 1764 laser module is a Dense Wavelength Division Multiplexing (DWDM) laser for analog wireless and distributed antenna system (DAS) applications. It features a distributed-feedback (DFB) device that has been designed specifically for radio frequency (RF) and wireless applications. The 1764 laser 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. The 1764 is available in all C-band ITU grid wavelengths. Applications Wireless Networks DAS Applications Performance Highlights Architectures Using Separate Optical Wavelengths to Carry Targeted Services Parameter Min Available Wavelengths Features Units See page 3 nm -40 25 +85 C Slope Efficiency 0.12 - 0.28 mW/mA 40 - 100 MHz/mA -57 dBc Adiabatic Chirp (measured at 500 MHz) Advanced Analog Chip Design 2 Order IMD OC-48 Pin Out Max Operating Temperature Range Standard ITU Grid Wavelengths Reduced Equipment Requirements in the Hub Typical nd rd 3 Order IMD -70 dBc Frequency Range 5 - 2700 MHz RF Return Loss 16 - - dB Telcordia Technologies™ 468 Compliant Wide Temperature Range – Stable Even in Harsh Environments 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. RoHS Compliant Parameter Symbol Condition Min Max Unit Operating Temperature Range Tc Continuous -40 +85 °C TSTG Continuous -40 +85 °C - Continuous - 150 mA Storage Temperature Range Laser Forward DC Current Photodiode Reverse Voltage VMPD Continuous - 10 V Laser Reverse Voltage, DC - Continuous - 1 V ESD - HBM: R = 1500 Ohm, C = 100pF -500 500 V -1.5 1.5 A TEC Current ITEC Continuous | REV 2013.07 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. 1764 1550 nm C-Band DWDM DFB Laser Module FIBER OPTICS DATASHEET | JULY 2013 Electrical/Optical Characteristics Laser Temperature (TL) = 25°C, IF = IOP, Beginning of Life (BOL) Parameter Operating Case Temperature Symbol Condition Min Typ Max Unit TC - -40 25 +85 C Iop=Ith+45 mA 0.12 - - mW/mA 25C, BOL - - 20 mA mA Slope Efficiency Threshold Current ITH Operating Current IOP BOL - - 120 Operating Voltage VOP 25C, BOL - - 2.5 ITU Grid Wavelength Drift over TC Range Laser Adiabatic Chirp Optical Return Loss Side Mode Suppression Ratio See page 4 V nm OP If = 60 mA, T = TOP - - 40 pm FM 40 - 100 MHz/mA ORL IF = 60 mA, TOP = 25C @ 500 MHz - 40 - - dB SMSR - 30 - - dB 30 - - dB - -155 dB/Hz Optical Isolation ISO 25C Relative Intensity Noise RIN IF = ITH + 70 mA 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 mA/W MPD Current Relative to Output Power - VRM = 5V, TOP = 25C 10 - 200 RTH TOP = 25C 9.5 10 10.5 kΩ Thermistor Temp. Coefficient TCTH TOP = 25C - -4.4 - %/C TEC Voltage VTEC - -2.5 - 3.8 V Thermistor Resistance RF Characteristic Laser Temperature (TL) = 25°C, Iop = Ith+45 mA, Beginning of Life (BOL) Parameter Symbol Frequency Response Flatness |S21| Condition Min Typ Max Units 40 MHz to 890 MHz IF = 60 mA, TOP = 25C - - 1 dBp-p 4 dBp-p - dB 5 MHz to 2700 MHz IF = 60 mA, TOP = 25C RF Return Loss resistive match 50 to 25 pad nd 2 Order IMD rd 3 Order IMD |S11| 5 MHz to 2700 MHz IF = 60 mA, TOP = 25C IMD2 900 MHz (f1 = 942 MHz, f2 = 943 MHz) (i) OMI = 5% per carrier -57 dBc 1800 MHz (f1 = 943 MHz, f2 = 1885 MHz) (i) OMI = 5% per carrier -57 dBc 900 MHz (f1 = 942 MHz, f2 = 943 MHz) (i) OMI = 5% per carrier -76 dBc 1800 MHz (f1 = 1842 MHz, f2 = 1843 MHz) (i) OMI = 5% per carrier -76 dBc 2100 MHz (f1 = 2140 MHz, f2 = 2145 MHz) (i) OMI = 5% per carrier -70 dBc 2600 MHz (f1 = 2640 MHz, f2 = 2650 MHz) (i) OMI = 5% per carrier -70 dBc IMD3 16 - o (i) Laser Temperature (TL) = 25 C, Iop = Ith+45 mA, Fiber Length = 2 km, Beginning of Life (BOL) 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. | REV 2013.07 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. 1764 1550 nm C-Band DWDM DFB Laser Module FIBER OPTICS DATASHEET | JULY 2013 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 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 (-) 8 TEC Figure 1. 1764 Laser Simplified Schematic Figure 2. 1764 Circuit Schematic | REV 2013.07 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. 1764 1550 nm C-Band DWDM DFB Laser Module DATASHEET | JULY 2013 FIBER OPTICS 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 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) | REV 2013.07 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. 1764 1550 nm C-Band DWDM DFB Laser Module FIBER OPTICS DATASHEET | JULY 2013 Outline Diagram (continued) 130 + 10 cm Conn Ordering Code Definitions 1764 – ww - xx – yy – 10 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 Channel Plan xx = BB: Broadband Connectors y = SC: SC/APC Example 1764-32-BB-SC-10: 1764, ITU channel 32, 1551.72 nm, SC/APC connector. | REV 2013.07 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. 1764 1550 nm C-Band DWDM DFB Laser Module DATASHEET | JULY 2013 FIBER OPTICS 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 = 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. | REV 2013.07 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.