Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module Description The 269-type DFB pump laser module represents a family of thermoelectrically cooled, high-power lasers. These devices achieve stable wavelength performance within the 1420 nm to 1510 nm range, over the full operating temperature range. They are designed as continuous-wave (CW) optical pump sources for dense wavelength-division multiplexing (DWDM) EDFA and Raman applications operating in the C- and L-bands. The 269-type DFB pump laser module is designed as a continuous-wave (CW) optical pump source for erbium-doped fiber amplifiers. Features ■ Low relative intensity noise (RIN) ■ High-coupled rated output power up to 280 mW, CW ■ Wide environmental range ■ Field-proven packaging technology ■ InGaAsP/InP high-power, strained multiple quantum-well (MQW), distributed-feedback (DFB) laser chip design ■ Internal optical isolator (optional) ■ Internal thermoelectric cooler (TEC) ■ InGaAs PIN photodetector back-facet monitor ■ Single-mode and polarization-maintaining fiber pigtails ■ Compact, 14-pin butterfly package ■ Industry compatible package and pinout Applications ■ Raman pump modules (RPM), copropagating and counterpropagating ■ Erbium-doped fiber amplifiers (EDFA) These new high-power DFB products represent a breakthrough in 14xx nm pump laser technology by integrating the beneficial characteristics of an external FBG laser design (such as stimulated Brillouin scattering suppression) with the superior relativeintensity noise (RIN) performance of a DFB laser. The combination of both characteristics is critical to enable copropagating Raman pumping, which distributes gain over the first few kilometers of the transmission fiber. The typical RIN value Agere Systems’ DFB lasers is –158 dB/Hz, a major improvement over comparable external FBG-stabilized lasers with a typical RIN of –125 dB/Hz. Integrating wavelength stabilization into the chip improves the stabilization over operating temperature and thereby eliminates the need for an external FBG . The laser modules incorporate a high-power, quantum-well laser chip that achieves fiber powers up to 280 mW. An integral thermoelectric cooler (TEC) stabilizes the laser at room temperature and, combined with a hermetic environment, allows the device to achieve high-power operation over the extended temperature range of 0 °C to 75 °C. An internal InGaAs PIN photodiode, mounted behind the laser diode, functions as the laser detector and monitors light emissions from the rear facet of the laser. The 269-type DFB module is offered in a 14-pin, hermetic butterfly package. Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module 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 Range Storage Case Temperature Range Laser Forward Bias (TEC on): PO = 120 mW—150 mW PO = 160 mW—210 mW PO = 220 mW—280 mW Laser Reverse Voltage Photodiode Reverse Voltage TEC Current TEC Voltage Temperature Sensor Current Laser Diode Operating Chip Temperature Symbol TC Tstg IF VR VRMON ITEC VTEC ITS TLD Min 0 –40 Max 75 85 Unit °C °C — — — — — — — — — 1000 1500 1900 2 20 2.2 5.0 5 40 mA mA mA V V A V mA °C Handling Precautions Electrostatic Discharge CAUTION: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper precautions during both handling and testing. Follow guidelines such as EIA * Standard EIA 625. Agere Systems Inc. employs a human-body model (HBM) for ESD-susceptibility testing and protection-design evaluation. ESD voltage thresholds are dependent on the critical parameters used to define the model. A standard HBM (resistance = 1.5 kΩ, capacitance = 100 pF) is widely used and, therefore, can be used for comparison purposes. The HBM ESD withstand voltage established for the 269-type laser pump module is ±500 V. * EIA is a registered trademark of The Electronic Industries Association. 2 Agere Systems Inc. Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module Electrical/Optical Characteristics Table 1. Electrical/Optical Characteristics (All performance parameters are specified for IF, OP, TSET = 25 °C, TCASE ~ 25 °C, unless otherwise specified.) Parameter Operating Optical Power Wavelength: Target Wavelength Center Wavelength RMS Spectral Width: Single Mode Multimode BOL Operating Laser Forward Current: PO = 120 mW PO = 130 mW PO = 140 mW PO = 150 mW BOL Operating Laser Forward Current: PO = 160 mW PO = 170 mW PO = 180 mW PO = 190 mW PO = 200 mW BOL Operating Laser Forward Current: PO = 210 mW PO = 220 mW PO = 230 mW PO = 240 mW PO = 250 mW PO = 260 mW PO = 270 mW PO = 280 mW EOL Operating Laser Forward Current EOL Laser Diode Forward Voltage Module Optical Isolation (optional feature) Polarization Extinction Ratio Relative Intensity Noise Symbol Conditions Min Typ Max Unit PO — 120 — 280 mW λt λC ∆λ — 0 °C—70 °C PO 1420 λt – 1.0 — — 1510 λt + 1.0 nm nm — — 1.0 0.2 5.0 0.3 MHz nm — — — — — — — — — — — — 550 600 600 600 mA mA mA mA — — — — — — — — — — — — — — — 650 700 700 750 800 mA mA mA mA mA IF, OP EOL — — — — — — — — — — — — — — — — — — — — — — — — — — — 850 900 950 1000 1000 1100 1100 1100 1.15 x mA mA mA mA mA mA mA mA mA VR ISO IF, OP EOL EOL Over — 30 2.3 — IF, OP BOL 3.0 — V dB PER RIN TCASE RANGE — PO 13 — — –158 — –150 dB dB/Hz IF, OP BOL IF, OP BOL IF, OP BOL Table 2. Monitor Photodiode Characteristics (All test parameters are specified for IF, OP, TSET = 25 °C, TCASE ~ 25 °C unless otherwise specified.) Parameter Monitor Diode Current Monitor Diode Dark Current Agere Systems Inc. Symbol Conditions Min Max Unit IBF ID — VR = –5 V, IF = 0 200 — 2000 100 µA nA 3 Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module Electrical/Optical Characteristics (continued) Table 3. TEC and Thermistor Characteristics (All performance parameters are specified for IF, OP, TSET = 25 °C, unless otherwise specified.) Parameter Symbol Conditions ITEC TSET = 25 °C; TCASE = 75 °C; ∆T = 50 °C, EOL TEC Current: PO = 120 mW PO = 130 mW PO = 140 mW PO = 150 mW TEC Current: PO = 160 mW PO = 170 mW PO = 180 mW PO = 190 mW PO = 200 mW TEC Current: PO = 210 mW PO = 220 mW PO = 230 mW PO = 240 mW PO = 250 mW PO = 260 mW PO = 270 mW PO = 280 mW TEC Voltage: PO = 120 mW PO = 130 mW PO = 140 mW PO = 150 mW TEC Voltage: PO = 160 mW PO = 170 mW PO = 180 mW PO = 190 mW PO = 200 mW TEC Voltage: PO = 210 mW PO = 220 mW PO = 230 mW PO = 240 mW PO = 250 mW PO = 260 mW PO = 270 mW PO = 280 mW Thermistor Resistance RTHERM Themistor B Constant B 4 ITEC ITEC VTEC VTEC VTEC TSET = 25 °C; TCASE = 70 °C; ∆T = 45 °C, EOL TSET = 25 °C; TCASE = 65 °C; ∆T = 40 °C, EOL TSET = 25 °C; TCASE = 75 °C; ∆T = 50 °C, EOL TSET = 25 °C; TCASE = 70 °C; ∆T = 45 °C, EOL TSET = 25 °C; TCASE = 65 °C; ∆T = 40 °C, EOL 25 °C Laser Diode Set Temperature — Min Max Unit — — — — 1.6 1.6 1.6 1.6 A A A A — — — — — 1.7 1.7 1.7 1.7 1.7 A A A A A — — — — — — — — 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 A A A A A A A A — — — — 3.5 3.5 3.5 3.5 V V V V — — — — — 3.7 3.7 3.7 3.7 3.7 V V V V V — — — — — — — — 9.5 4.2 4.2 4.2 4.2 4.2 4.2 4.2 4.2 10.5 V V V V V V V V kΩ 3700 4100 K Agere Systems Inc. Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module User Information Mounting and Connections Table 4. Pin Information CAUTION: This device is susceptible to damage as a result of electrostatic discharge. Proper precautions should be taken during both handling and testing. Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Connection TE Cooler (+)* Thermistor Monitor Anode (–Bias) Monitor Cathode (+Bias) Thermistor No Connect No Connect No Connect No Connect Laser Anode (+) Laser Cathode (–) No Connect Package Ground TEC Cooler (–) The base of the laser module (see Outline Diagram) should be maintained at or below 75 °C (maximum) during operation. Interfaces between the laser module base and heat sink must be clean, and the use of a thermal filler may be necessary. Mounting Instructions The minimum fiber bend radius is 1.0 in. To avoid degradation in performance, mount the module on the board as follows: 1. Place the bottom flange of the module on a flat heat sink at least 0.5 in. x 1.180 in. (12.7 mm x 30 mm) in size. The surface finish of the heat sink should be better than 32 µin. (0.8 µm), and the surface flatness must be better than 0.001 in. (25.4 µm). Using thermal conductive grease is optional; however, thermal performance may be improved if conductive grease is applied between the bottom flange and the heat sink. * A positive input into this pin cools the laser. Fiber Characteristics ■ Length of fiber pigtail: — 1.75 m ± 0.25 m ■ Standard fiber: — Cladding OD: 125 µm ± 2 µm — Acrylate buffer OD: 250 µm ± 15 µm — Cut off wavelength: <1320 nm ■ 2. Mount four #2-56 screws with Fillister heads (M2-3 mm) at the four screw hole locations (see Outline Diagram). The Fillister head diameter must not exceed 0.140 in. (3.55 mm). Do not apply more than 1 in./lb. of torque to the screws. Polarization-maintaining fiber: — PANDA — Cut off wavelength: <1400 nm — Acrylate buffer: 400 µm 7 6 5 4 3 2 1 – + TEC TH 10 kΩ ISOLATOR (OPTIONAL) + 8 9 10 – 11 12 13 14 1-675 (F).i Figure 1. Circuit Schematic Agere Systems Inc. 5 Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module Outline Diagram Dimensions are in inches and (millimeters). 1.025 (26.04) PIN 1 0.020 (0.51) TYP. 0.10 (0.25) 0.105 (2.667) DIA. TYP. (4) PLACES 0.178 (4.52) 0.035 (0.91) 0.598 0.500 0.350 (15.19) (12.70) (8.89) MAX. 0.078 (1.99) 0.078 (1.98) PIN 14 0.213 (5.40) TYP. 0.215 ± 0.10 (5.46 ± 2.54) 0.100 (2.54) TYP. 0.180 (4.57) 0.820 (20.83) 0.700 (17.78) 0.347 (8.8) 0.363 (9.23) 0.334 ± 0.005 (8.49 ± 0.005) 0.215 (5.46) 6 0.175 (4.45) 1.180 (29.97) 0.030 (0.76) 1-1065 (F)a Agere Systems Inc. Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module Laser Safety Information Class IIIb Laser Product FDA/CDRH Class IIIb laser product. All versions are Class IIIb laser products per CDRH, 21 CFR 1040 Laser Safety requirements. All versions are Class IIIb laser products per IEC * 60825-1:1993. The device has been classified with the FDA under accession number 8720010. This product complies with 21 CFR 1040.10 and 1040.11. 8.8 µm/125 µm single-mode fiber pigtail (see Fiber Characteristics, page 5). Wavelength = 1.40 µm—1.52 µm. Maximum power = 400 mW. Because of size constraints, laser safety labeling (including an FDA Class IIIb 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 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 3B Laser Product IEC-60825M 1993 Max. Output: 400 mW Wavelength: 1.40 µm—1.52 µm * IEC is a registered trademark of The International Electrotechnical Commission. Agere Systems Inc. 7 Data Sheet June 2001 269-Type 14xx nm DFB Pump Laser Module Ordering Information Device Code Information ORDER CODE: BASIC PART NUMBER FIBER A = NONISOLATED, SMF B = NONISOLATED, PMF C = ISOLATED, SMF D = ISOLATED, PMF OPERATING POWER XX0 mW 269 – X – XX – X – XXXX –X CONNECTOR OPTIONS A = NO CONNECTOR B = SC/APC C = FC/APC WAVELENGTH XXXX nm OPERATING MODE D = DFB, SINGLE MODE M = DFB, MULTIMODE For additional information, contact your Agere Systems Account Manager or the following: http://www.agere.com INTERNET: [email protected] E-MAIL: N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Agere Systems Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Agere Systems (Shanghai) Co., Ltd., 33/F Jin Mao Tower, 88 Century Boulevard Pudong, Shanghai 200121 PRC Tel. (86) 21 50471212, FAX (86) 21 50472266 JAPAN: Agere Systems Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148 Technical Inquiries: OPTOELECTRONICS MARKETING: (44) 1344 865 900 (Ascot UK) Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. Copyright © 2001 Agere Systems Inc. All Rights Reserved June 2001 DS01-237OPTO