Features subject to change - not contractually valid unless specifically authorized by Pirelli

© 2008 PGT Photonics S.p.A.All rights reserved - Printed in Italy

PGT Photonics

nDTL Series High Power Full C-Band or L-Band tunable laser source

Dynamically Tunable

Laser

Pirelli Dynamically TunableLaser (DTL) is a continuous

wave (CW) external cavity laserfor advanced DWDM optical

network systems.

Housed in ahermetically-sealed

26-pin-butterfly package,DTL is designed

to tune over the entireC-band or L-band

of an ITU-T 50 GHzchannel grid.

The electrical tuningcontrol guarantees

fast switching time andhigh spectral purity and

wavelength accuracy.The laser, fully Telcordia GR-468-CORE qualified, does not require moving

parts to achieve tunability.

The conceptualblock scheme of thetunable laser includesa conventionalFabry-Perot laser chip,voltage-controlled tunablemirror and atemperature-stabilitysystem.Pirelli DTL is designedto provide fast switchingover a 50 GHz channelgrid. No wavelength lockeris needed to achievefrequency stability, andthe laser is compatiblewith 25 GHz DWDMchannel spacing.

DTL

_04/

2008

Features subject to change - not contractually valid unless specifically authorized by Pirelli

© 2008 PGT Photonics S.p.A.All rights reserved - Printed in Italy

PGT Photonics S.p.A. Viale Sarca, 222 - 20126 Milano – ItalyFax: +39 02 6442 7811

U.S. Sales Office75 Fifth Street NW Suite 320Atlanta, GA 30308 USAPhone: +404 920 0749Fax: +404 920 0748

photonics@pirelli.comwww.pirelli.com

PGT Photonics

nDTL Series High Power Full C-Band or L-Band tunable laser source

Applications

• Sparing for DWDM line cards • Dynamic provisioning • Dynamic Add/Drop • Channel protection • Agile wavelength routing (wavelength conversion) • Testing and measurement

Features

• Settable output power• Full C-band or L-band tunability • 50 GHz DWDM applications • Superior SMSR • High line stability • Narrow Linewidth • Fast tuning time

Dynamically Tunable Laser

Pirelli DTL calibration procedure,as the active control loop,involves only three, independent,control parameters.This makes the automatic searchalgorithm for the control matrixparticularly fast and reliable.The entire calibration proceduretakes few minutes and it is fullyautomatic.

Notes:1- 89 channels or 98 channels. Tuning range is settable within the Frequency range window 2- Discrete Tuning function over the frequency grid specified in the ITU recommendations 3- Instantaneous 3 dB value4- Over 10 MHz – 10 GHz frequency range, @ Pout=+13 dBm 5- Including connector - LD polarization output state is aligned to slow axis

ELECTRO-OPTICAL CHARACTERISTICS (TCASE =-5 to 75 °C over lifetime whereas otherwise specified)Item Symbol Min. Typ. Max. UnitLD Operative Current Iop - 300 400 mALD Forward Voltage Vop - 1 2.5 VPD Responsivity RPD 5 - 80 mA/mW

PD Monitor Dark Current Idark PD - 1 5 nAPD Capacitance (Vr=5V) CPD - 4 7 pFTEC Current ITEC - - 1.5 ATEC Voltage VTEC - - 2.8 VThermistorOB Resistance Rth OB 5 8 11 kOhmThermistorAmbient Resistance Rth A 1.3 - 55.3 kOhmThermistor Resistance (T=25° C) Rth 9.5 - 10.5 kOhmPhase Adjuster Resistance RPA 45 - 55 OhmPhase Adjuster Power PPA - - 0.2 WTunable Mirror voltage (rms) VTM 2.5 - 45 VChannel voltage separation (rms) Dvchannels 110 - - mVTunable Mirror voltage Waveform Square – 100KHzTM Voltage recommended Rise time1 Rt 10 - 50 nsTM Voltage recommended Fall time1 Ft 10 - 50 nsPower Dissipation P - 2.5 3.5 W

ABSOLUTE MAXIMUM RATINGSItem Symbol Max. UnitLD forward current ILD 700 mAOptical Output power POUT 20 dBmOptical Safety Class 1M as per IEC 60825-1PD reverse current IrPD 5 mAPD forward current IfPD 25 mATEC current ITEC 2 ATM Tuning voltage VTM 100 VTM Residual DC voltage VDCTM 50 mVPhase Adjuster Maximum Power PPA 1.5 WLead soldering temperature Tsold 260 °CLead soldering Time tsold 10 sElectro Static Discharge1 ESD 500 V

Notes:1- Human body model (R=1.5 K – C=100 pF)

STORAGE CONDITIONSItem Symbol Min. Max. UnitStorage Case Temperature Range

TSTG -40 85 °C

Storage Humidity (non-condensing)

HSTG - 95 %

PIN ASSIGNMENT Pin# Function1 TEC Anode2 Monitor PD Cathode3 Monitor PD Anode4 Thermistor 11

5 Thermistor 11

6 Thermistor 22

7 Thermistor 22

8 Tuning Control9 NC10 NC11 NC12 NC13 GND14 GND15 NC16 NC17 NC18 NC19 Tuning Control20 NC21 Phase Adjuster22 Phase Adjuster23 NC24 LD Anode25 LD Cathode26 TEC Cathode

FIBER SPECIFICATIONSItem Min. Max. UnitLaunch Polarization Axis

Slow Axis

Alignment to key1

-2 +2 deg

Outer Jacked diameter

0.25 0.9 mm

Pigtail Length 1.0 1.2 mMinimum Fiber bending radius

15 - mm

Notes:1- With connector

Notes:1- Ambient Thermistor2- Optical Bed (OB) Thermistor

OPTICAL CHARACTERISTICS Item Symbol Min. Typ. Max. UnitTuning Range1 λrange 35 - 39 nmFrequency Range C-Band nrange 191.150 - 196.250 THzFrequency Range L-Band nrange 186.200 - 190.950 THzChannel Spacing2 DF - 50 - GHzOutput Power Setting (in fiber) Pout +7 - +14 dBmOutput Power Stability DPout -0.5 - +0.5 dBSide Mode Suppression Ratio SMSR 45 50 - dBLinewidth3 Dn - - 500 KHzSBS Spectral Linewidth (threshold≥14 dBm) LWBS 700 - - MHz

SBS Frequency Range fSBS - 10 - KHzSBS Amplitude modulation ASBS 0 - 6 %Relative Intensity Noise4 RIN - -150 -140 dB/HzFrequency Stability DfS -1.5 - 1.5 GHzFrequency Stability (BOL) DfS -1 - 1 GHzPolarization Extinction Ratio5 PER 20 - - dBTurn-off Optical Power Poff - - -45 dBmWarm-up Time twarm-up - 20 - s

Notes:1- The delivered control matrix data will be measured using a 450 ns rise/fall time.

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