1955 F/R/W Coaxial DFB Laser Diode 1550 nm CWDM 5 MHz – 4000 MHz DATASHEET | AUGUST 2012 FIBER OPTICS EMCORE’s Model 1955 DFB lasers offer a low cost solution for linear fiber optic links. These components can be cooled with external thermo-electric coolers for high stability, or run without TEC’s to reduce power consumption. The DFB laser builds upon Ortel’s long history of high performance, leading edge designs in CATV, wireless, and high speed digital applications. The laser diode devices are packaged in a compact hermetic assembly together with monitor photodiode and isolator, for flexible integration into various transmitter configurations. Performance Highlights Parameters Applications Operating Case Temperature Range Video Signal Distribution in HFC and FTTx Nodes Signal Distribution in L-Band and Wireless Remoting Links High Linearity, Low Power Fiber Links Optical Output Power (1) Frequency Range Carrier-to-Noise Ratio (79 channels) Features (1) Composite Second Order (79 channels) Min Typical Max Units -40 3 - 85 C - 4.9 5 - 5.9 6 - 8.9 9 - 9.9 10 - 11.9 dBm 5 - 4000 MHz 51 - - dB dBc (1) Linear DFB Laser Design Standard Linearity - - -55 Ouput Power Up to 10 dBm Available Enhanced Linearity - - -57 Standard Linearity - - -65 Enhanced Linearity - - -68 45 - - dB 30 - - dB Composite Triple Beat (79 channels) Bandwidth 5 – 4000 MHz RoHS Compliance (1) Single and Double Optical Isolator Optical Return Loss High Slope Efficiency up to 0.3mW/mA Side Mode Suppression Ratio, CW Monitor Photodiode 1. Performance at Tcase = 25°C (1) (1) | 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. dBc 1955 F/R/W Coaxial DFB Laser Diode 1550 nm CWDM 5 MHz – 4000 MHz FIBER OPTICS DATASHEET | AUGUST 2012 Absolute Maximum Ratings1 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. Parameters Symbol Condition/Notes Min Max Storage Temperature TSTG Non-Operating -40 85 o Operating Case Temperature TOP Continuous -40 85 o Laser Diode Forward Current IOP CW - 150 mA Laser Diode Reverse Voltage VR Continuous - 1.0 V Photodiode Forward Current IMPD Continuous - 2 mA Photodiode Reverse Voltage VMPD,R Continuous - 10 V PIN 60 Seconds - 62 Average RF Input Power Lead Soldering Temperature/Time Relative Humidity Unit C C dBmV o - - - 260/10 RH Continuous - 85 % - Human Body Model -500 +500 V ESD C/sec 1. Absolute maximum data are limited to system design only; proper device performance is not guaranteed over rating listed above. Operation beyond these maximum conditions may degrade device performance, lead to device failure, shorter lifetime, and will invalidate the device warranty. Electrical/Optical Characteristics Parameters Optical Output Power Symbol PO Threshold Current ITH Laser Bias Current IOP Forward Voltage VF Slope Efficiency Thermal Slope Efficiency Laser Input Impedance MPD Current MPD Dark Current Relative Intensity Noise Conditions/Notes Min Typ Max Unit 1955R opt model: 3-6dBm - 4.9 5.9 8.9 9.9 11.9 dBm 1955F opt model: 3-10 dBm 3 5 6 9 10 Tcase = 25ºC Tcase = 45ºC - 8 13 15 20 mA 1955W opt model: 3-10 dBm - - 80 mA Iop - 1.17 1.8 V SE Tcase = 25ºC, Iop 0.07 - 0.3 mW/mA TSE SE(Tc)/SE(25ºC) Tcase = -20ºC to 85ºC 0.4 - 1.2 - Z - 2 4 8 IMPD VMPD = 5V, Iop 50 - 2000 A ID VMPD = 5V, Iop = 0 Tcase = 25ºC - - 50 nA RIN CW, Iop, Tcase = 25ºC 5 MHz - 1002 MHz - - -150 dB/Hz | 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. 1955 F/R/W Coaxial DFB Laser Diode 1550 nm CWDM 5 MHz – 4000 MHz FIBER OPTICS DATASHEET | AUGUST 2012 Electrical/Optical Characteristics (continued) Parameters Symbol Min Typ Max Unit -1 - +1 dB 45 30 - - dB Iop - 0.1 1.0 nm SMSR Iop 30 45 - dB ORL Tcase = 25ºC 35 - - dB Rise Time tr Tcase = 25ºC - 0.05 0.10 ns Fall Time tf Tcase = 25ºC - 0.10 0.15 ns ER 10log (2.omW/Pf (Ith)) 10 - - dB Symbol Conditions/Notes Min Typ Max Unit |S21| 47 MHz – 1002 MHz 5 MHz – 4000 MHz - - 1 4 dBp-p 47 MHz < f < 1002 MHz -1 3 dB CNR Iop 51 - - dB Standard Linearity Enhanced Linearity CSO Iop Tcase = 25ºC - - -55 -57 dBc Standard Linearity Enhanced Linearity CTB Iop Tcase = 25ºC - - -65 -68 dBc Tracking Error ΔPf Optical Isolation, Tcase = 25ºC ISO Spectral Width (-20 dB) Side Mode Suppression Ratio Optical Return Loss Extinction Ratio Conditions/Notes IMON = const ER = 10log(PO/2.0) [dB] Double Isolator Single Isolator 1. Referenced to base of TO header. Forward Path RF Characteristics 1955F Performance Parameter Frequency Response Flatness Response Up-tilt 1 1 Carrier-to-Noise Ratio 2,3,4 Composite Second Order Composite Triple Beat 2,3,4 2,3,4 1. Iop, Tcase = 25C. Test with the laser Input pin matched to a 50 system. 2. 3.7% OMI, 79 NTSC unmodulated carriers (50 MHz to 550 MHz). 10 km fiber. 3. Received power = 0 dBm. 4. Iop, Tcase = 25C. Test with the laser Input pin matched to a 75 system. Return Path RF Characteristics 1955R Performance Parameters Frequency Response Flatness Second Order Distortion Standard Linearity Enhanced Linearity Third Order Distortion Standard Linearity Enhanced Linearity 1 Symbol Conditions/Notes Min Typ Max Unit |S21| 5 MHz - 200 MHz - - 1 dBp-p DSO PF = 3 dBm, OMI = 10% each 2-tone test: f1=13MHz, f2=19MHz 20 km of fiber (7.5 dB total loss with connector) DSO meas at 6MHz, 32MHz - - -45 -50 dBc DTB PF = 3 dBm, OMI = 10% each 2-tone test: f1=13MHz, f2=19MHz 20 km of fiber (7.5 dB total loss with connector) DTO meas at 7MHz, 25MHz - - -63 -65 dBc 2 2 1. Iop, Tcase = 25C. Test with the laser Input pin matched to a 50 system. 2. Iop, Tcase = 25C. Test with laser input pin matched to a 75 system. | 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. 1955 F/R/W Coaxial DFB Laser Diode 1550 nm CWDM 5 MHz – 4000 MHz FIBER OPTICS DATASHEET | AUGUST 2012 Wide Bandwidth Path RF Characteristics 1955W Performance Parameters Frequency Response Flatness Input Third Order Intercept 1dB Compression Point 1 2 3 Symbol Conditions/Notes Min Typ Max Unit |S21| 900 MHz – 4000 MHz - - 4 dBp-p IIP3 Standard Linearity, Ibb 30 - - dBm P1dB Ibb 16 - - dBm 1. Iop, Tcase = 25C. Test with the laser Input pin matched to a 50 system. 2. IIP3 is measured at Ibb where Ibb is the bias point at which simultaneously the laser at its best linearity and the optical power is within specification. Test Frequency F1 = 2700MHz, F2 = 2703MHz, RF in = 0dBm/frequency. 0km fiber. 3. Test at 2700MHz. 0km fiber. Package Outline Drawing (dimensions are in mm) Mounting Bracket | 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. 1955 F/R/W Coaxial DFB Laser Diode 1550 nm CWDM 5 MHz – 4000 MHz FIBER OPTICS DATASHEET | AUGUST 2012 Reliability/Quality Designed to meet qualification requirements of TelcordiaTM (Bellcore) GR-468-CORE. Schematic and Pinout Schematic and Pinout A 3 PD 4 2 LD 1 Pin Definitions for Pinout A Pin Description 1 2 3 4 LD Anode, Case Ground LD Cathode PD Cathode PD Anode Pinout A Bottom View 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 version 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 = 1.3 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 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. 1955 F/R/W Coaxial DFB Laser Diode 1550 nm CWDM 5 MHz – 4000 MHz FIBER OPTICS DATASHEET | AUGUST 2012 Ordering Code Definitions 1955x - a - bb - c - dddd - ww - yy - z Family Name 1955F: Forward Path 1955R: Return Path 1955W: Wide Bandwidth Distortion Performance a = A: Standard Linearity a = B: Enhanced Linearity (not available for 1955W) Optical Isolator bb = DI: Double Isolator (only available for optical 3 – 6dBm) bb = SI: Single Isolator Pinout c = A: Pinout A O-Band Wavelength dddd = 1470:1470 nm dddd = 1490:1490 nm dddd = 1510:1510 nm dddd = 1530:1530 nm dddd = 1550:1550 nm dddd = 1570:1570 nm dddd = 1590:1590 nm dddd = 1610:1610 nm Fiber Length, Optical Connector ww = FA: FC/APC, 900 micron buffer, 1.0 – 1.4 meter ww = SA: SC/APC, 900 micron buffer, 1.0 – 1.4 meter Optical Output Power yy = 03: 3 dBm (2 mW) yy = 05: 5 dBm (3 mW) yy = 06: 6 dBm (4 mW) yy = 09: 9 dBm (8 mW) – (only available for 1935F and 1935W) yy = 10: 10 dBm (10 mW) – (only available for 1935F and 1935W) Mounting Bracket z = B: Mounting Bracket z = N: No Mounting Bracket Example 1955F-B-DI-A-1550-SA-10-N: Forward Path Uncooled 1550 nm CWDM Coaxial Laser, Enhanced Linearity, Double Isolator, Pinout A, 1550 nm, SC/APC optical connector, 10 dBm optical power, no mounting bracket. | 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.