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NEC'S EA MODULATOR AND WAVELENGTH MONITOR INTEGRATED InGaAsP MQW DFB LASER DIODE MODULE FOR 2.5 Gb/s ULTRALONG-REACH 240, 360, 600 km DWDM APPLICATIONS
FEATURES
• INTEGRATED ELECTROABSORPTION MODULATOR • WAVELENGTH MONITOR FUNCTION (Etalon Þlter, Wavelength monitor PD) • VERY LOW DISPERSION PENALTY NX8567SAS Series - over 240 km (4320 ps/nm) NX8567SAM Series - over 360 km (6480 ps/nm) NX8567SA Series - over 600 km (10800 ps/nm) • LOW MODULATION VOLTAGE • AVAILABLE FOR DWDM WAVELENGHT BASED ON ITU-T RECOMMENDATION (50 GHz grid, refer to ordering information)
NX8567SA Series
DESCRIPTION
NEC's NX8567SA Series is an Electro-Absorption (EA) modulator and wavelength monitor integrated, 1 550 nm Multiple Quantum Well (MQW) structured Distributed Feed-Back (DFB) laser diode module. The module is capable of 2.5 Gb/s applications of over 240 km, 360 km, 600 km ultralong-reach and available for Dense Wavelength Division Multiplexing (DWDM) wavelengths based on ITU-T recommendations, enabling a wide range of applications
ELECTRO-OPTICAL CHARACTERISTICS (TLD = Tset, TC = -5 to +70°C, unless otherwise speciÞed)
PART NUMBER SYMBOLS TSET IOP Vcenter Vmod VFLD ITH Laser Set PARAMETERS AND CONDITIONS Temperature1 UNITS °C mA V V V mA IFLD = IOP, Under modulation2 Pf Optical Output Power from Fiber, (NX8567SAM/SA Series) IFLD = IOP, Under modulation2 (NX8567SAS Series) λP SMSR ER tf tr Peak Emission Wavelength, IFLD = IOP, VEA = 0 V Side Mode Suppression Ratio, IFLD = IOP, VEA = 0 V Extinction Ratio, IFLD = IOP, Under modulation2 Rise Time, IFLD = IOP, 20-80%, Under modulation2 Rise Time, IFLD = IOP, 80-20%, Under modulation2 nm dB dB ps ps dBm 0 1528 30 10 – – +1 ITU-T3 40 11 – – – 1564 – – 125 125 MIN 20 50 -2.0 – – – -5 60 – 2 – 7 -2 NX8567SA SERIES TYP MAX 35 80 -0.5 3 2.0 20 –
Operating Current Modulation Center Voltage2 Modulation Voltage2
Forward Voltage of LD, IFLD = IOP Threshold Current
Notes: 1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength 2. 2.48832 Gb/s, PRBS 223 -1, VEA = Vcenter ±1/2 Vmod, IFLD = Iop, TLD = Tset, NEC Test System Vcenter : a certain point between -2.0 and -0.5 V Vmod : a certain point 3 V or below Iop : a certain point between 50 and 80 mA 3. Available for DWDM wavelenght based on ITU-T recommendation (100 GHz grid). Please refer to ORDERING INFORMATION. 4. BER = 10-10, NX8567SAS: 240 km (4320 ps/nm) BER = 10-10, NX8567SAM: 360 km (6480 ps/nm) BER = 10-10, NX8567SA: 600 km (10800 ps/nm)
California Eastern Laboratories
NX8567SA SERIES ELECTRO-OPTICAL CHARACTERISTICS (TLD = Tset, TC = -5 to +70°C, Unless otherwise speciÞed)
PART NUMBER SYMBOLS DP PARAMETERS AND CONDITIONS Dispension Penalty, IFLD = Iop, SMF Under modulation2,4 UNITS dB MIN – NX8567SA SERIES TYP – MAX 2
IS S11
Isolation Input Return Loss IFLD = Iop, VEA = -1 V, 50 Ω 130 MHz to 2 GHz IFLD = Iop, VEA = -1 V, 50 Ω 2 GHz to 2.5 GHz
dB
23 –
– – –
– -8 -5
dB
–
Notes: 1. Tset is a certain point between 20 and 35C for ITU-T grid wavelength 2. 2.48832 Gb/s, PRBS 223 -1, VEA = Vcenter ±1/2 Vmod, IFLD = Iop, TLD = Tset, NEC Test System Vcenter : a certain point between -2.0 and -0.5 V Vmod : a certain point 3 V or below Iop : a certain point between 50 and 80 mA 3. Available for DWDM wavelenght based on ITU-T recommendation (100 GHz grid). Please refer to ORDERING INFORMATION. 4. BER = 10-10, NX8567SAS: 240 km(4320 ps/nm) BER = 10-10, NX8567SAM: 360 km (6480 ps/nm) BER = 10-10, NX8567SA: 600 km (10800 ps/nm)
ELECTRO-OPTICAL CHARACTERISTICS (Applicable to Monitor PD, TLD = Tset, TC = -5 to +70°C, BOL)
SYMBOLS Im (Pf) Im (λp) Im (λ) |λ1-λ2| ηλ ID Ct γ2 Discrimination Slope1, VRPD = 5 V, IFLD = Iop, Locking point Dark Current, VRPD = 5 V, VEA = 0 V Terminal Capacitance, VRPD = 5 V, f = 1 MHz Tracking Error, Im(Pf) = const. Note: 1. Operating region, Discrimination slope, Slope assignment
Im (λ) Im @100% I1: Im @75% Im (λp) I2: Im @25% Im @0% 0 λ1 λp λ2 Negative Slope λ (nm) Operation region Locking point Im (λp) I1: Im @25% Im @0% 0 λ1 λp λ2 Positive Slope λ (nm)
PARAMETERS AND CONDITIONS Monitor Current (Pf Monitor), VRPD = 5 V, IFLD = Iop Monitor Current (λp Monitor), VRPD = 5 V, IFLD = Iop, Locking point Operation Region
UNITS µA µA % pm µA/pm nA pF dB
MIN 10 5 25 90 0.24 – – –
TYP – – – – – – – –
MAX 200 100 75 – – 10 15 0.5
ηλ =
I1 – I2 λ1 – λ2
[ µA/pm]
Im (λ)
Im @100% I2: Im @75% Operation region Locking point
2. Tracking error: γ
Pf (mW) TLD = Tset, TC = 25ûC
Pop Pf
TLD = Tset, TC = –20 to +70ûC
γ = 10 log
Pf Pop
[dB]
0
Im
Im
NX8567SA SERIES
ELECTRO-OPTICAL CHARACTERISTICS (Applicable to Thermistor and TEC, TC = -5 to +70°C)
PART NUMBER SYMBOLS R B IC VC PARAMETERS AND CONDITIONS Thermistor Resistance, TLD = 25°C B Constant Cooler Current, TLD = Tset Cooler Voltage, TLD = Tset kΩ K A V UNITS 9.5 3350 MIN NX8567SA SERIES TYP 10.0 3450 MAX 10.5 3550 1.2 2.4
ABSOLUTE MAXIMUM RATINGS1
SYMBOLS Pf IFLD VRLD VFm VRm IFPD VRPD IC VC TC TSTG TSLD PARAMETERS Optica.