1751A_13 EMCORE | Alldatasheet
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Technical content
Features
Standard ITU Grid Wavelengths Advanced Analog Chip Design Reduces Equipment Requirements in the Hub Telecordia TechnologiesTM 468 Compliant Wide Temperature Range – Stable Even in Harsh Environments The 1751 laser module is a Dense Wavelength-Division Multiplexing (DWDM) laser for analog applications. It features a distributed feedback chip that has been designed specifically for Radio Frequency (RF) applications. The 1751 laser module 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 versatile 1751 laser module reduces cable network architecture fiber needs and lessens equipment reqirements in the hub. The 1751 is available in a wide range of standard ITU wavelengths. The lasers are offered as either forward-path (40 MHz- 860 MHz) or return-path (5 MHz-210 MHz) modules. Performance Highlights Parameters Min Typical Max Units Available wavelengths (ITU Grid) 1527.99 - 1562.23 nm Optical Output Power (multiple versions) 6-10 - - mW Temperature Case Temperature Range -40 - +85 C Frequency Range: Return Path Forward Path 210 860 MHz MHz Composite Second Order 50 - - dBc Composite Triple Beat 60 - - dBc Adiabatic Chirp (measured at 500 MHz) 40 - 100 MHz/mA 1751A 1550 nm DWDM DFB Laser Module
DATASHEET | JUNE 2012 FIBER OPTICS | REV 2012.06 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. 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 Units Operating Case Temperature T C continuous -40 +85 C Storage Temperature TSTG - -40 +85 C Laser Forward dc Current - - - 150 mA Reverse Voltage Photodiode VRPD - - 10 V Laser Reverse Voltage, dc V R - - 1 V ESD - HBM: R = 1500 Ohm, C = 100 pF -500 500 V TEC Current I TEC continuous -1.7 1.7 A RF Input Power PRFIN IF = IOP - 62 dBmV Electrical/Optical Characteristics Laser Temperature (TL) = 25oC, IF=IOP, Beginning of Life (BOL) Parameter Symbol Condition Min Typ Max Unit Wavelength λOP I F = IOP, T = TOP 1527.94 - 1563.1 nm Optical Output Power PO 1751xxxx-06 version -08 version -10 version mW mW 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 Laser Relative Intensity Noise RIN IF = ITH + 70 mA, T = 25 C - <-155 - dB/Hz Wavelength Drift as Case Temp. is Changed IF = 60 mA, T = TOP, Tc varied from minmax - - 0.04 nm Threshold Current ITH - - 20 mA Operating Current I OP - - 120 mA Monitor PD Responsivity rPD VRM=5V 10 - 200 μA/mW Thermistor Resistance R TH TOP=25 C 9.5 10 10.5 K Ω Thermistor Temperature Coefficient TCTH TOP=25 C - -4.4 - %/C TEC Current I TEC -40<TC<+85C IF = 100 mA -1.5 - 1.6 A Fiber Length - May include splice 1.0 1.5 - m Fiber Buffer - - - 900 - m Fiber Core / Cladding - - - 9/125 - m 1. Measured Wavelength = Operating wavelength with a tolerance of ± 0.05 nm. 1751A 1550 nm DWDM DFB Laser Module
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.
- Measured on a 50 resistively matched system.
- I OP is the bias point at which simultaneously the linearity, the min. optical power and the required operating wavelength,
- 8 channel loading with 10% OMI and 40 km fiber length.
- Forward band (FB=45-870 MHz): Eight channel CW measurement: channel frequencies set at 553.25, 559.25, 565.25,
42 MHz
- Measured Wavelength = Operating wavelength with a tolerance of +
Figure 1. 1751A Laser Schematic Figure 2. 1751A Circuit Schematic
DATASHEET | JUNE 2012 FIBER OPTICS | REV 2012.06 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. Outline Diagrams (Dimensions are in inches and millimeters) Pin Definitions Pin Description
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
11 Laser Common (+), Case GND
12 Laser Modulation (-)
13 Laser Common (+), Case GND
1751A 1550 nm DWDM DFB Laser Module
DATASHEET | JUNE 2012 FIBER OPTICS | REV 2012.06 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. 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 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. 1751A 1550 nm DWDM DFB Laser Module 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 DANGER INVISIBLE LASER RADIATION Max. Output: 50 mW, Class 1 Laser Product AVOID DIRECT EXPOSURE TO BEAM Wavelength: 1.3 m
DATASHEET | JUNE 2012 FIBER OPTICS | REV 2012.06 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. Ordering Code Definitions 1751-19-BB-SC-10 Family name 1751A, Analog 1550 nm, DFB, DWDM Frequency Plan BB = Both Forward and Return Connectors FC = FC/APC SC = SC/APC PG = None (no connector) 1751A 1550 nm DWDM DFB Laser Module Optical Power min. 06 = 6 mW 08 = 8 mW 10 = 10 mW ITU Wavelength 19 = ch.19 20 = ch.20 21 = ch.21 22 = ch.22 23 = ch.23 24 = ch.24 25 = ch.25 26 = ch.26 27 = ch.27 28 = ch.28 29= ch.29 30 = ch.30 31 = ch.31 32 = ch.32 33 = ch.33 34 = ch.34 35 = ch.35 36 = ch.36 37 = ch.37 38 = ch.38 39 = ch.39 40 = ch.40 41 = ch.41 42 = ch.42 43 = ch.43 44 = ch.44 45 = ch.45 46 = ch.46 47 = ch.47 48 = ch.48 49 = ch.49 50 = ch.50 51 = ch.51 52 = ch.52 53 = ch.53 54 = ch.54 55 = ch.55 56 = ch.56 57 = ch.57 58 = ch.58 59 = ch.59 60 = ch.60 61 = ch.61 62 = ch.62