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PRELIMINARY DATA SHEET
NEC's InGaAsP MQW-DFB LASER MODULE IN COAXIAL PACKAGE FOR 2.5 Gb/s, CWDM APPLICATIONS
FEATURES
* INTERNAL OPTICAL ISOLATOR * PEAK EMISSION WAVELENGTH p = 1 470 to 1 610 nm (Based on CWDM) * OPTICAL OUTPUT POWER Pf = 2.0 mW * OPERATING CASE TEMPERATURE RANGE TC = -20 to +85C * SIDE MODE SUPPRESSION RATIO SMSR = 40 dB * InGaAs MONITOR PIN-PD * WITH SC-UPC CONNECTOR * BASED ON TELCORDIA RELIABILITY
NX8508 Series
DESCRIPTION
NEC'S NX8508 Series are 1 470 to 1 610 nm Multiple Quantum Well (MQW) structured Distributed Feed-Back (DFB) laser diode coaxial modules with an internal optical isolator. These devices are ideal for 2.5 Gb/s CWDM application.
ELECTRO-OPTICAL CHARACTERISTICS (TC = -20 to +85C, unless otherwise specified)
PART NUMBER SYMBOLS Pf Vop Ith PARAMETER AND CONDITIONS Optical Output Power from Fiber, CW, TC = 25C, IF = Ith + 20 mA Operating Voltage, CW, Pf = 2.0 mW Threshold Current, TC = 25C UNIT mW V mA MIN. NX8508 SERIES TYP. 2.0 1.1 10 1.6 20 50 Pth d Threshold Output Power, IF = Ith Differential Efficiency Pf = 2.0 mW, TC = 25C Pf = 2.0 mW d Temperature Dependence of Differential Efficiency d (@ TCC) d = 10 log d (@ 25C) Peak Emission Wavelength, CW, Pf = 2.0 mW, TC = 25C Temperature Dependence of Peak Emission Wavelength, CW Side Mode Suppression Ratio, Pf = 2.0 mW Rise Time, 20-80%, Pf = 2.0 mW dB W W/A 0.07 0.04 -3.0 -1.6 0.1 100 MAX.
p /T SMSR tr
nm nm/C dB ps
p-2 0.08 30
p *1 0.10 40
p+2 0.12 100
Continued on next page
California Eastern Laboratories
NX8508 Series ELECTRO-OPTICAL CHARACTERISTICS (TC = -25 to +85C, unless otherwise specified)
PART NUMBER SYMBOLS tf Im ID PARAMETER AND CONDITIONS Fall Time, 80-20%, Pf = 2.0 mW Monitor Current, VR = 1.5 V, Pf = 1.0 mW Monitor Dark Current VR = 1.5 V, TC = 25C VR = 1.5 V Tracking Error *2, Im = const. dB -1.0 UNIT ps A nA 100 500 0.1 10 MIN. NX8508 SERIES TYP. MAX. 150 1 000 10 100 1.0
*1 Available Available for CWDM Wavelengths based on ITU-T recommendations p = 1 470, 1 490, 1 510, 1 530, 1 550, 1 570, 1 590, 1 610 nm Please refer to Table A. Table A: CWDM wavelength code (@ TC = 25C)
WAVELENGTH CODE 47 49 51 53 55 57 59 61 1 468 1 488 1 508 1 528 1 548 1 568 1 588 1 608 1 470 1 490 1 510 1 530 1 550 1 570 1 590 1 610 1 472 1 492 1 512 1 532 1 552 1 572 1 592 1 612 MIN. (nm) TYP. (nm) MAX. (nm)
*2 Tracking Error:
Pf (mW) 2.0 Pf TC = 25C TC = -20 to +85C
= 10 log
Pf 2.0
[dB]
0
Im
(mA)
Im
NX8508 Series ABSOLUTE MAXIMUM RATINGS1
SYMBOL Pf IF VR IF VR TC Tstg PARAMETER Optical Output Power from Fiber Forward Current of LD Reverse Voltage of LD Forward Current of PD Reverse Voltage of PD Operating Case Temperature Storage Temperature UNIT mW mA V mA V C C RATINGS 5 150 2.0 2.0 15 -20 to +85 -40 to +85
PACKAGE DIMENSIONS (Units in mm)
NX8508BMxx*1 -CC
Optical Fiber (SMF) With SC Connector
NX8508CGxx*1 -CC
Optical Fiber (SMF) With SC Connector
0.9
0.9
6.0
27.61.0
6.0
7.3
7.00.2
7.00.2
8.00.3 3.2 4.00.2
20.41.0
8.00.3 0.50.2
2.2
0.450.05
12.70.2 17.00.2
0.450.05
16.0
PIN CONNECTIONS
P.C.D. = 2.0 1.00.1 7.20.3
4 1 3 2
2 3 4 1
7.00.2
4 1 Case
PD
3 2
P.C.D. = 2.0 4-R1.250.2
PIN CONNECTIONS
PD 3 4 2 1 LD Case
3.70.3
LD
2- 2.5
8.50.2 12.00.15
*1 Please refer to ORDERING INFORMATION.
19.51.0
1.20.2
0.5
2.2
20.01.0
28.31.0
15.0
NX8508 Series
OPTICAL FIBER CHARACTERISTICS
PARAMETER Mode Field Diameter Cladding Diameter Maximum Cladding Noncircularity Maximum Core/Cladding Concentricity Outer Diameter Cut-off Wavelength Minimum Fiber Bending Radius Fiber Length Flammability SPECIFICATION 9.51 1252 2 1.6 0.90.1 1 100 to 1 270 30 1 000100 UL1581 VW-1 UNIT m m % % mm nm mm mm
352 mm 8.990.5 mm
SC-UPC Connector Fiber Length: 1 000100 mm
ORDERING INFORMATION
PART NUMBER NX8508BMxx-CC-AZ* NX8508CGxx-CC-AZ* FLANGE TYPE Flat Mount Flange Vertical Mount Flange AVAILABLE CONNECTOR With SC-UPC Connector
*NOTE: Please refer to the last page of this data sheet, "Compliance with EU Directives" for Pb-Free RoHS Compliance Infomation.
NX8508 xx-CC
Connector code : With SC-UPC connector Wavelength code : Refer to Table A Package code : Refer to PACKAGE DIMENSIONS
Life Support Applications These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify CEL for all damages resulting from such improper use or sale.
05/03/2004
A Business Partner of NEC Compound Semiconductor Devices, Ltd.
4590 Patrick Henry Drive Santa Clara, CA 95054-1817 Telephone: (408) 919-2500 Facsimile: (408) 988-0279
Subject: Compliance with EU Directives CEL certifies, to its knowledge, that semiconductor and laser products detailed below are compliant with the requirements of European Union (EU) Directive 2002/95/EC Restriction on Use of Hazardous Substances in electrical and electronic equipment (RoHS) and the requirements of EU Directive 2003/11/EC Restriction on Penta and Octa BDE. CEL Pb-free products have the same base part number with a suffix added. The suffix -A indicates that the device is Pb-free. The -AZ suffix is used to designate devices containing Pb which are exempted from the requirement of RoHS directive (*). In all cases the devices have Pb-free terminals. All devices with these suffixes meet the requirements of the RoHS directive. This status is based on CEL's understanding of the EU Directives and knowledge of the materials that go into its products as of the date of disclosure of this information.
Restricted Substance per RoHS Lead (Pb) Mercury Cadmium Hexavalent Chromium PBB PBDE Concentration Limit per RoHS (values are not yet fixed) < 1000 PPM < 1000 PPM < 100 PPM < 1000 PPM < 1000 PPM < 1000 PPM Concentration contained in CEL devices -A Not Detected Not Detected Not Detected Not Detected Not Detected Not Detected -AZ (*)
If you should have any additional questions regarding our devices and compliance to environmental standards, please do not hesitate to contact your local representative.
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