1861 Gb/s 13 nm DML DFB Laser The 1861 directly-modulated laser (DML) is a cost-effective solution for Gb/s digital transmission of up to 60 km using traditional intra-city SMF-28 single-mode fiber links. The 13 nm wavelength eliminates the concern about dispersion control over most installed intra-city fiber plants. The package contains a high-speed DFB laser chip, thermoelectric cooler, thermistor, optical isolator, and a rear-facet monitor photodiode for external optical power control. Applications VSR, SR, IR and LR applications SONET and Gb/s Ethernet transponders and line cards Features Internal TEC for stable performance over wide case range of 5 to 80 C High relaxation frequency at low bias Hermetically sealed optics, isolator on TEC Lower cost than EML Application Overview Application Standard Model -1 to 6 5 to 1 7 to 4 GR-253 13 to OIF I-64.1r, OC-192 SR-1 0 km 7 km S-64.1, OC-192 IR-1 0 km 20 km L-64.1, OC-192 LR-1 0 km 40 km OC-192 VR-1 0 km 60 km OIF, Serial VSR 0 m 600 m See following pages for complete specifications and conditions (0 km 12 km) 1861C2 (0 km 30 km) 1861C (0 km 40 km) 1861E (0 km 60 km) (0 km 12 km) Wide range of powers and distances. For more information on this and other products: Contact Sales at EMCORE 626-293-3400, or visit www.emcore.com.
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 Min Max Units Operating Case Temperature Range TCASE,OP -5 80 C Storage Case Temperature Range TCASE,STG -40 85 C Laser Forward Bias (TEC on) - - 150 ma Laser Reverse Voltage (pin 3) 1 VR - 1 V Laser Reverse Current (pin 3) 1 IR - 200 ma Photodiode Reverse Voltage VPD - 20 V TEC Current ITEC - 1.7 A 1. For RF connection ac coupled. Electrical / Optical Characteristics 3 Parameter Symbol Condition Min Typ Max Units Wavelength λ - 1290-1320 nm Optical Output Power (EOL) 1861C2 1861C 1861D 1861E PO IOP = ITH + 50 ma Threshold Current (BOL) ITH - 2-30 ma Wavelength Tuning Coefficient λt - - 0.085 - nm/ C ac Side-Mode Suppression Ratio SMSR IOP 35 - - db Chromatic Dispersion Penalty 1-60 km, SMF-28, 200 ps/nm ( & C) - - 1.0 db Optical Isolation - - 32 - - db High-frequency Cutoff (-3 db) FHIGH IOP 2 14 - - GHz Low-frequency Cutoff (-3 db) FLOW IOP 2 - - 30 khz RF Return Loss, 50 Ω S11 IOP, 0.1 to 8 GHz - - db Rise / Fall Time, % - 90% tr, tf - 1 - - 50 ps Thermoelectric Cooler Current ITEC - - - 1.3 A Thermistor Resistance RTH 25 C 30 C Thermistor Temp. Coefficient - - - -4.4 - %/ C Monitor Photodiode Current IMPD IOP 40-1500 µa 1. Gb/s, PRBS 2 23-1, ER = 8.2 db, T laser = 30 C, I = I OP, typical 50 mwp-p drive current. 2. Measurements made with 0 µh in series with pin 3 (laser cathode). 3. All measurements made at T CASE,OP = -5 to 80 C, T laser = 30 C, I = I OP unless noted otherwise. -6 1 4 7 9.5 7.6-3 4 6 8.5 11 8.0-1 5 7 13.5 8.4 kω kω 2 of 5
Internal Circuit 7 6 5 4 3 2 1 - + + - - T E C C A S E G R O U N D T H I S O L A T O R Pin Information Pin Function 1 Thermistor 2 Thermistor 3 Laser Cathode (-), dc Bias 1 4 MPD Anode, (Negative Bias MPD) 5 MPD Cathode 6 Thermoelectric Cooler (+) 2 7 Thermoelectric Cooler (-) 1. Laser anode is case ground. 2. A positive current into pin 6 cools the laser. RF Connector (50 Ohm, GPO TM RF GND connected to Case) Outline Diagram Dimensions are in inches (mm in parentheses). 0.365 (9.45 9.09) 0.040 (1.19 0.84) 0.228 (5.97 5.61) 0.350 (9.07 8.71) LEADS 0.008 THICK x 0.030 WIDE 0.400 MIN. LENGTH 6 SPCS @ 0.0 (0.254) RF INPUT LIMITED DETENT GPO OR SMP CONNECTOR 0.164 DIA 0.248 (6.45 6.12) 1.025 (26.21 25.86) 0.420 (.85.49) FIBER AND BEND LIMITER MAINTAIN FIBER BEND RADIUS GREATER THAN 1.5 0.318 (8.26 7.90) 0.078 (2.16 1.80) 0.5 DIA 4 PLCS 0.600 (15.00) PIN 1 0.212 (5.56 5.21) 0.820 (20.80) 1.180 (30.00) 0.250 (6.53 6.17) 0.500 (12.88 12.52) 0.215 ± 0.0 (5.50 ±0.30) 0.190 (5.00 4.65) 0.048 (1.40 1.04) 3 of 5
Characteristic Curve Figure 1. Filtered Optical Eye Pattern (0 km, fourth-order Bessel filter, 8.4 db ER, 20 ps/div) 4 of 5
Laser Safety This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH Class IIIb laser product. This device has been classified with the FDA/CDRH under accession number 0220250. Single-mode fiber pigtail with SC/APC connectors (standard). Wavelength = 1.3 µm. Maximum power = 30 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. Information contained herein is deemed to be reliable and accurate as of issue date. EMCORE reserves the right to change the design or specifications of the product at any time without notice. EMCORE and the EMCORE logo are trademarks of. 2015 W. Chestnut Street Alhambra, CA 91803-1542 Phone: 626-293-3400 Fax: 626-293-3428 www.emcore.com Copyright 2003. ds.1861 5 of 5