Alcatel 1915 LMM WDM ps/nm application 10 Gbit/s digital Laser Module with integrated electro-absorption Modulator

Transcription

1 Alcatel 1915 LMM WDM ps/nm application 10 Gbit/s digital Laser Module with integrated electro-absorption Modulator Description The Alcatel 1915 LMM contains an Alcatel DFB laser with monolithically integrated electro-absorption modulator (ILM). The modulation voltage is applied to the modulator section while the DFB laser operates CW. Without the complexity of LiNbO3 external modulators, the Alcatel 1915 LMM is dedicated to STM64/OC-192 bit rate with reduced size and reduced cost. This device allows 10 Gbit/s data transmission with an extinction ratio higher than 10 db and less than 2 V modulation voltage. The Alcatel 1915 LMM is optimised for 10 Gbit/s TDM and WDM transmission systems supporting dispersion from 50 ps/nm to 1600 ps/nm. Features 7-pin package with either GPO or K connector RF input High frequency RF connector package with 50 Ω RF impedance InGaAsP monolithically integrated DFB laser and modulator chip Low drive voltage ( 2 Vpp) Very low dispersion penalty up to 80 km for 10 Gbit/s operation (up to 1600 ps/nm) Internal optical isolator, monitor photodiode, thermistor and thermo-electric cooler High power available Wavelength selection according to ITU-T G.692 Applications STM-64 and OC-192 long reach WDM transmission systems Terminals for submarine WDM transmission systems WDM long reach 10 Gbit/s applications Optical characteristics Parameter Threshold current Symb. I th Conditions CW, V bias = 0 V Min 5 Max 35 Units ma Operating current I op CW, V bias = 0 V ma Optical output power P AVE I op, V mod, [1], [2] -3 dbm Laser forward voltage V F CW, I op, V bias = 0 V 2 V Modulator bias voltage V bias See [1] V Modulator drive voltage V mod See [1] 2 V Dynamic extinction ratio DER I op, [1], [2] 10 db Emission wavelength λm See table 1 nm (emitted-target) wavelength λe See [3] nm Laser chip temperature range for tunability Tλ See [3] C Side mode suppression SMSR See [1] 35 db Cut off frequency S21-3 db, V bias = - 1 V 8 GHz RF return loss S11 DC to 7 GHz 10 db S11 7 to 10 GHz 7 db Dispersion penalty S See [1], [2], [4] 2 db Tracking error TR Tsubmount = 25 C, Tcase = 70 C db If = 100 ma, Q = 10 log {[P(70 C)-P(25 C)]/P(25 C)} Rise time / Fall time Tr/Tf See [1], 10%, 90% 45 ps Wavelength drift vs Tcase λ/ Tc 0.5 pm/ C Monitor diode current I m I op, VM = - 5 V µa Dark current I d 0.1 µa TEC current I t T= 50 C, I op = 100 ma, T C = 70 C, V bias = - 1 V 1.3 A TEC voltage V t T= 50 C, I op = 100 ma, T C = 70 C, V bias = - 1 V 2.5 V Thermistor resistance R TH KΩ Notes : All limits start of life Tcase in the range [0 C ; 70 C], Tsubmount = 25 C, monitor bias = - 5 V, unless otherwise stated. [1] BER = ; 9,953 Gbit/s modulation; PRBS; NZR line code [2] 1600 ps/nm dispersion, assuming fiber with an average dispersion of 18 ps/nm/km [3] Tsubmount = Tλ. Tλ is chip temperature required to meet target wavelength (see table 1) [4] Use of a booster up to +6 dbm output power Page 1/5

2 Absolute maximum ratings Parameters Min Max Unit Operating case temperature 0 70 C Storage temperature C Laser forward current 150 ma Laser reverse voltage 2 V Modulator forward voltage 1 V Modulator reverse voltage 5 V Photodiode forward current 1 ma Photodiode reverse voltage 20 V TEC Voltage 2.8 V TEC Current 1.4 A ESD applied on modulator 500 V ESD applied on laser [1] 2000 V Lead soldering time (at 260 C) 10 s Packing Mounting Screw Torque 0.2 nm [1] Human body model Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Mechanical details GPO Connector K Connector Pin out N Description 1 Thermistor 2 Thermistor 3 Laser DC bias (+) 4 Photodetector Anode (-) 5 Photodetector Cathode (+) 6 TEC (+) 7 TEC (-) Page 2/5

3 Major Characteristics Fig. 1 Return Loss Response Fig. 2 Typical Bit Error Rate Frequency (GHz) 0,0 2,5 5,0 7,5 10,0 12,5 15,0 0-5 Bit Error Rate 1,E-04 1,E Gbit/s, PRBS, NRZ line code, If = 80 ma, Pave, Tcase = 25 C -10 1,E km fiber Return Loss (5 db/div) ,E-07 1,E-08 1,E-09 0 km Ω Test If = 80 ma, Pave, Tcase = 25 C 1,E-10 1,E-11 1,E Received Optical Power (dbm) Fig. 3 Typical Extinction Ratio versus Bias Voltage Fig. 4 Typical Filtered Output Eye Diagram with a Driver circuit (without fiber ; see recommended circuit in Application Note) Gbit/s, PRBS NRZ, Tc=25 C, Tsubmount = 25 C, If = 80 ma, Pave and DER 10 db Vbias (V) 0-0,5-1 -1,5-2 SER (db) ps/div Page 3/5

4 Qualification, Reliability and Standards Alcatel Optronics policy for all products is to carry out a complete qualification program. This qualification is based on manufacturers qualification in agreement with Telcordia GR-468-Core (Generic Reliability Assurance Requirements for Optoelectronic Devices Used In Telecommunications Equipment - Central Office Level), MIL STD 883E (Test method and procedures for microelectronics) and following the standards ITU-T G652 and G-691. All products pass strict tests before shipping. Failure criteria are defined during the product qualification process. Device marking The device shall be legibly and permanently marked with the following information: Alcatel logo Product family name: A 1915 LMM Product code : 3CN number (see Ordering information section) Serial number Shipment packing Each device is individually packed in an anti-static container and in such a manner as to prevent damage in transit. The packing shall include the following information: Alcatel logo Product family name : A 1915 LMM Product code : 3CN number (see Ordering information section) Serial number Hazard warning label (ESD) Laser Safety Class Label Deliverable data The following data shall be supplied with each device : L(I) / V(I) / I pd (I) curves Values for Vmod, Von (On-state voltage [0 data]), DER, S0 (received optical power without fiber), S and Pave for I f Plot of SER vs I f = 80 ma over the range 0 V to 3 V and Tcase = Tsubmount = 25 C DER and dispersion penalty ( S) Laser Safety information Take appropriate precautions to prevent undue exposure to naked eye. This product is classified Class 3A Laser Product according to IEC FDA/CDRH Class IIIb laser product. All versions are Class IIIb laser products per CDRH, 21 CFR 1040 Laser. Safety requirements under accession number LASER RADIATION AVOID EXPOSURE TO BEAM Class 3A laser product Handling This product is sensitive to electrostatic discharge and should not be handled except at a static free workstation. Take precautions to prevent ESD; use wrist straps, grounded work surfaces and recognised anti-static techniques when handling the Alcatel 1915 LMM module. Handle the laser module by its package only, never hold it by its pigtail. Care should be taken to avoid supply transient and over voltage. Over voltage above the maximum specified in absolute maximum rating section may cause permanent damage to the device. ATTENTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES Page 4/5

5 Ordering information Alcatel 1915 LMM Application Part number Electrical Connector Optical Connector 1600 ps/nm 3CN00316## K type FC/PC type 1600 ps/nm 3CN00322## GPO type FC/PC type 1600 ps/nm 3CN00589## GPO type SC/PC type March 2002 Copyright 2002 Alcatel Optronics Customized versions are available for large quantities. Performance figures contained in this document must be specifically confirmed in writing by Alcatel Optronics before they become applicable to any particular order or contract. Alcatel Optronics reserves the right to make changes to the products or information contained herein without notice. λ THz Code 3CN00316## Code 3CN00589## and 3CN00322## GY BK GZ BM FA BP 1530,33 195,9 FB BR 1531,11 195,8 FC BT 1531,89 195,7 FD BV 1532,68 195,6 FE BX 1533,46 195,5 FF BZ 1534,25 195,4 FG CB 1535,03 195,3 FH CD 1535,82 195,2 FJ CF 1536,61 195,1 FK CH 1537, FL CK 1538,18 194,9 FM CM 1538,97 194,8 FN CP 1539,76 194,7 FP CR 1540,55 194,6 FQ CT 1541,35 194,5 FR CV 1542,14 194,4 FS CX 1542,93 194,3 FT CZ 1543,73 194,2 FU DB 1544,52 194,1 FV DD 1545, FW DF 1546,11 193,9 FX DH 1546,91 193,8 FY DK 1547,71 193,7 FZ DM 1548,51 193,6 GA DP 1549,31 193,5 GB DR 1550,11 193,4 GC DT 1550,91 193,3 GD DV 1551,72 193,2 GE DX 1552,52 193,1 GF DZ 1553, GG EB 1554,13 192,9 GH ED 1554,94 192,8 GJ EF 1555,74 192,7 GK EH 1556,55 192,6 GL EK 1557,36 192,5 GM EM 1558,17 192,4 GN EP 1558,98 192,3 GP ER 1559,79 192,2 GQ ET GR EV GS EX GT EZ GU FB GV FD FF Table 1, All wavelengths referenced to vacuum For additional information, contact your Alcatel Optronics Account Manager, or the following : INTERNET http :// optronics@alcatel.com EUROPE France : (+33) UK : (+44) USA Chantilly VA : (+1) Plano TX : (+1) CANADA Gatineau : (+1) ASIA - PACIFIC Japan : (+81) China : (+86) Page 5/5