(+65)315887579 (+65)31588700 [email protected] www.ld-pd.com
LD-PD INC Here Every Diode is Best! -Laser diodes and Photodiodes
Headquarters:288,Woolands Loop, #04-00,Singapore 738100
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DescriptionThe PL-NL series directly modulated external cavity laser is cost effective solution for2.5 Gbits/s digital transmission in SMF-28 fiber. This is fabricated in a hermeticallysealed 14-pin butterfly package that contains thermoelectric cooler (TEC), thermistor,monitor photodiode, optical isolator.The PL-NL provides substantially lower dispersion penalty and lower chirp than adirectly modulated DFB. The wavelength stability is assured by design, eliminatingthe need for wavelength lockers and complex feedback control circuits.Features:█ ITU wavelengths across C-band█ 100 GHz channel spacing█ SONET/SDH OC-48/STM16 ring and meshed applications█ Low dispersion provides█ Low transient chirp provides unique narrow dynamic spectrum█ Excellent long-term wavelength stability eliminates the need for a wavelengthlockerApplications:█ Metro and Long Haul DWDM,100 GHz spaced networks█ SONET/SDH OC-48/STM16 ring and meshed applications█ Drop-side of DWDM long-haul transport equipment█ Optical Test and Instrumentation█ Microwave Photonics█ CATV networks█ SensorsOptical Characteristics (at 25 °C laser temperature)
Parameter Symbol Condition Min. Typical Max. UnitCenter Wavelength λc TL=15~35℃ CW 1549.62 1550.12 1550.62 nmPeak Optical Output
PowerPO - 5 - - mW
Spectral linewidth LW - - 75 100 KHzSide-mode
Suppression RatioSMSR CW 30 40 - dB
1550nm Narrow Linewidth SM Laser Diodes
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LD-PD INC Here Every Diode is Best! -Laser diodes and Photodiodes
Headquarters:288,Woolands Loop, #04-00,Singapore 738100Page 2 of 4
Optical Isolation - -10 < TC < +70 ºC 30 - - dBPolarization
Extinction RatioER - 20 - - dB
Relative IntensityNoise
RINCW, outputpower 5mW
- - -135 dB
Wavelength driftwith case (-10 to 70
ºC) temperature△λ TL=15~35℃ - - ±30 pm
WavelengthTemperaturecoefficient
Δλ/ΔT TL=15~35℃ - 15 30 pm/ºC
Wavelength Currentcoefficient
Δλ/ΔΙ - - 1.5 2 pm/mA
Electrical Characteristics (at 25 °C laser temperature)Parameter Symbol Condition Min. Typical Max. Unit
Threshold Current ITH - - 15 25 mA
Slope Efficiency ƞ CW output power 5mW
0.064 0.1 - mW/mA
Operating current Iop CW - 150 200 mATEC set temperature Ts - 15 - 35 ℃
Laser ForwardVoltage
VFCW output power 5
mW- 1.3 1.8 V
Monitor Dark Current ID - - - 0.1 μAInput Impedance ZIN - 22 25 28 Ω
Thermistor Current ITC - 10 - 100 μAThermistorResistance
RTH TL = 25 °C 9.5 10 10.5 KΩ
TEC Current ITECTL = 25 °C, TC =
70 °C- - 1.8 A
TEC Voltage VTECTL = 25 °C, TC =
70 °C- - 3.5 V
TEC capacity ΔT Tc = 70℃ - - 50 °CThermistor
temperature- - - - 100 °C
Fiber Pigtail SpecificationsParameters DescriptionFiber Type PM fiber
Jacket Type 900μm loose tubePigtail Length 1.0±0.1m
Connector Type FC/APCPM fiber Connector
OrientationPlease see the right
figureNote: The PM fiber and the connector key are aligned to
(+65)315887579 (+65)31588700 [email protected] www.ld-pd.com
LD-PD INC Here Every Diode is Best! -Laser diodes and Photodiodes
Headquarters:288,Woolands Loop, #04-00,Singapore 738100
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the slow axis,fast axis is blockedPackage Size and pin definition:
1 Thermistor2 Thermistor3 Laser dc Bias (Cathode) (–)4 PD Monitor Anode (-)5 PD Monitor Cathode (+)6 Thermoelectric Cooler (+)7 Thermoelectric Cooler (–)8 Case Ground9 Case Ground10 Case Ground11 Laser Anode (+)12 RF Laser Input Cathode (–)13 Laser Anode (+)14 Case Ground
ABSOLUTE MAXIMUM RATINGSAbsolute Maximum Ratings
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LD-PD INC Here Every Diode is Best! -Laser diodes and Photodiodes
Headquarters:288,Woolands Loop, #04-00,Singapore 738100
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Stresses in excess of the absolute maximum ratings can cause permanent damage tothe device. These are absolute stress ratings only. Functional operation of the deviceis not implied at these or any other conditions in excess of those given in theoperational sections of the data sheet. Exposure to absolute maximum ratings forextended periods can adversely affect device reliability.
Parameter Symbol Condition Min. Typical Max. UnitStorage temperature Ts - -40 - 85 ℃
Operating casetemperature
Top - -15 - 75 ℃
Forward Current IF CW - - 280 mAReverse Voltage VR - - - 2 V
Photodiode ForwardCurrent
IFPD - - - 2 mA
Photodiode ReverseVoltage
VRPD - - - 10 V
TEC current ITEC - - 0.8 1.5 ATEC voltage VTEC - - 1.5 3.5 V
Ordering Info:PL-NL-☆-A8▽-W□□□□-XX☆ :Output PowerA:10mWB:20mW▽:Linewidth1:<100KHZ2:<200KHZ□ □□□:Wavelength1550:1550nm1555:1555nm*****1560:1560nmXX: Fiber and Connector TypeSA=SMF-28E+ FC/APCSP=SMF-28E+ FC/PCPA=PM Fiber+ FC/APCPP=PM Fiber+ FC/PCPA=PM Fiber+ FC/APC