4235/4245 Tunable Laser Transmitter

Transcription

1 AGILE TRANSMISSION MODULES 4235/4245 Tunable Laser Transmitter Key Features Up to 2.5 Gb/s data rate 35 nm operating range ( nm) 90 ITU channels at 50 GHz spacing Blanking to -30 dbm during switching Optional VOA function Minimum sidemode suppression ratio of 35 db Hermetically sealed laser package with integrated optical isolator Self-contained microprocessor control and monitor electronics Programmable wavelength control supports all C-band channels Wavelength stabilized mode of operation with an integrated wavelength locker Applications DWDM sparing Dynamic wavelength provisioning for metro Dynamic add/drop multiplexers Optical cross connects Wavelength converters The JDSU Agile Transmission Modules family includes tunable transponders and tunable lasers. The flexibility enabled by JDSU's transponders is critical to the successful and rapid deployment of next generation, IP-based voice, data and video services which are driving new network management challenges for communications service providers. They also support multiple modulation formats to allow multiple applications, from ultra long haul to metro networks, in a single platform. The 4235/4245 Widely Tunable Laser Transmitter (TLT) consists of a Sampled Grating Distributed Bragg Reflector (SG-DBR) laser monolithically integrated with an Electro-Absorption Modulator (EAM) and Semiconductor Optical Amplifier (SOA). It also incorporates an integral wavelength locker. The integrated SOA acts as a shutter during wavelength switching and as an optional Variable Optical Attenuator (VOA) for pre-emphasis of transmitter power levels to optimize link performance. NORTH AMERICA: JDSU (5378) WORLDWIDE: JDSU WEBSITE:

2 2 Dimensions Diagram (Specifications in inches [mm] unless otherwise noted.) Top View Side View Bottom View Variable Attenuator Specifications (Optional) Attenuation range ΔPVOA 4.8 db db Attenuation step size 1 ΔVPL 0.16 db 0.2 db 0.24 db 1. Attenuation is applied in steps that may vary from db/step across the tuning range.

3 3 Pinout Pin Description 1 Ground (TEC) 2 NC 3 Alarm 1 (General w/ Query) 1 4 Tx Enable 5 VC3 6 Ground 7 Alarm 2 (Single Alarm, Assignable) 1 8 UART Interface (Tx) 9 UART Interface (Rx) 10 Reset 11 Ground 12 VEE 13 VC5 14 VTEC 15 Ground 16 DATA 17 Ground 18 DATA BAR 19 Ground 20 CLOCK 21 Ground 22 CLOCK BAR 23 Ground 24 VC5 Pin 1 Pin 12 Pin Connections (Bottom View) Pin 24 Pin Alarms are active high. Absolute Maximum Ratings Parameter Symbol Minimum Maximum 5 V supply voltage VC5-5.5 V 3.3 V supply voltage VC3-3.8 V Negative supply voltage VEE - -6 V TEC supply voltage VTEC V Operating case temperature range Tcase -5 C 70 C Storage case temperature range Tstg -40 C 85 C Lead soldering temperature - 250/10 C/s Relative humidity (noncondensing) RH - 85% Minimum fiber-bend radius 1 in. (25.4 mm) - Note: Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.

4 4 Electrical Specifications 5.0 V DC power supply voltage VC V 5.0 V 5.25 V 5.0 V DC power supply current IC ma 3.3 V DC power supply voltage VC3 3.0 V 3.3 V 3.6 V 3.3 V DC power supply current IC ma Negative power supply voltage VEE -5.3 V -5.2 V V Negative power supply current IEE ma Power dissipation PDISS - 5 W 9.7 W 1 TEC power supply voltage VTEC 4.75 V 5.0 V 5.25 V TEC power supply current ITEC ma Input data/clock voltage VIN Single-ended input mvp-p 400 mvp-p 800 mvp-p Differential input mvp-p 200 mvp-p 400 mvp-p Input impedance - 50 Ω - Setup time 3 TSET 35 ps - - Hold time 3 THOLD 60 ps - - Clock duty cycle CDC 40% 50% 60% Return loss Input data (100 khz-2 GHz) 4 RLDATA db Input clock GHz 5 RLCLOCK db Receive: Input low voltage (Pin 9) VIL -0.5 V V Receive: Input high voltage (Pin 9) VIH 1.7 V V Receive: Input current (Pin 9) IIN -10 µa - 82 µa Receive: Input capacitance (Pin 9) CIN pf Transmit: Output low voltage (Pin 8) 6 VOL V Transmit: Output high voltage (Pin 8) 7 VOH 2.4 V At nominal supply voltage, maximum case temperature, and end-of-life operating currents (applies to max. value only) 2. Inputs are AC-coupled internally into an equivalent input impedance of 50 Ω. Differential input voltage refers to signal on each complementary input 3. See Timing Diagram below 4. Frequency range: 100 khz - 2 GHz 5. At frequency of 2.5 GHz 6. IOL = 8 ma 7. IOH = -8 ma Electrical Input/Output Interface Timing Diagram tset thold

5 5 Optical Specifications Max. time averaged output power out any channel PAVE MAX 4235 TLT 0 dbm 1 dbm TLT 2 dbm 3 dbm - Power variation 1 Within a channel, Tc = -5 to 70 C ΔPAVe - - ± 0.5 db Between channels, Tc = 25 C - - ± 0.5 db Number of consecutive channels Channel spacing - 50 GHz - First available channel λc nm THz Last available channel λc nm THz - - Frequency accuracy over life & temperature 2-3 GHz - 3 GHz Side mode suppression ratio 3 SMSR 35 db - - Maximum return loss (optical) RLOPT db Bit rate 4235 TLT Gb/s Gb/s 2.7 Gb/s 4245 TLT 0.1 Gb/s Gb/s 2.7 Gb/s Intrinsic jitter (12 khz - 20 MHz) UIp-p RF extinction ratio 5 ERRF 10 db - - Eye mask of optical output Meets SONET and ITU-T Optical rise/fall time (20%-80%) 6, 7 tr,tf ps 125 ps Dispersion penalty DP 4235 TLT 300 km (SMF-28) db 4235 TLT 360 km (SMF-28) db 4245 TLT 3400 ps/nm, 200 km - 1 db 2 db 1. Power variation within and between channels is under locked operation after a switching event relative to TC = 25 C, and BOL. 2. Under locked operation. 3. Ratio of average power in the dominant mode to the highest side mode (in a 0.1 nm resolution bandwidth) under full modulation, open loop wavelength operating conditions. 4. Filter bandwidth from 12 khz - 20 MHz, according to ITU-T G Ratio of logic 1 output power to logic 0 under fully modulated conditions (receiver filtered). 6. GR-253-CORE, Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria. 7. ITU-T Recommendation G.957, Optical Interfaces for Equipment Relating to the Synchronous Digital Hierarchy. Channel Switching Specifications Blanked output power 1 PBLANK dbm Locked frequency accuracy - - ± 3 GHz Wavelength switching time 2, 3 tswitch ms 1. Output power is less than -30 dbm at frequencies more than 10 GHz away from new channel. 2. Time from receipt of channel switching command to locked operation (± 3 GHz frequency, ± 0.3 db power) at new channel ms switching performance is an optional feature, and is not required for one-time provisioning applications.

6 6 Tunable Laser Transmitter (TLT) Installation The TLT electrical connector pins will withstand mating forces similar to those of internal personal computer ribbon cables. Because the complete TLT is not hermetically sealed, do not immerse it or spray it with cleaning solutions or solvents. The fiber connector handling/protection (dust) cap and the fiber pigtail materials can deform at temperatures above +85 C. TLT Handling Considerations Although the TLT has been designed to be physically robust, use care during handing and installation. Keep optical connector clean and free of surface particles. Keep the optical connector handling/protection cap in place when the fiber pigtail is not mated. Oil-free canned air or nitrogen with an extension tube may be used to help remove surface particles. Observe normal industry procedures for handling and cleaning. Use care in controlling the minimum fiber bend radius. Make sure that the protection cap is debris-free and clean prior to reinstalling it on the optical connector. Patents This product is protected under U.S. Patent Number 4,896,325 and other patents pending worldwide. Ordering Information For more information on this or other products and their availability, please contact your local JDSU account manager or JDSU directly at JDSU (5378) in North America and JDSU worldwide or via at Optical Connector Options The standard fiber pigtail is nominally a one-meter length singlemode fiber with a 900 micrometer outer diameter. The fiber is terminated to an LC connector as standard. Other connector styles may be available by special order. Contact JDSU technical support with specific needs.

7 Qualification and Reliability New product introduction follows a comprehensive gating structure that monitors time, costs, quality and reliability of the product from concept to volume manufacturing, and ensures that products meet all requirements during the life cycle. The product qualification will fully meet the intent of the Telcordia standards, and qualifies the product in stages of integration, building upon qualified Core Technology Platforms. The laser components will be tested under accelerated life tests using both temperature and current, to determine the MTTF. Hermetic Laser Diode Modules will be qualified to GR-468-CORE. Laser Safety CLASS 1 LASER PRODUCT per IEC/EN /A2:2001 CAUTION: Use of controls, adjustments, and procedures other than those specified herein may result in hazardous laser radiation exposure. The 41XX and 42XX versions of widely tunable laser transmitters are classified as Class I laser products per IEC/EN /A2:2001. This product complies with FDA/CDRH, 21 CFR and except for deviations pursuant to Laser Notice No. 50 dated 26 July, Maximum laser power less than 10 mw at 1550 nm could be accessible if optical connector is open or fiber is broken. Telcordia is a registered trademark of Telcordia Technologies Incorporated. All statements, technical information and recommendations related to the products herein are based upon information believed to be reliable or accurate. However, the accuracy or completeness thereof is not guaranteed, and no responsibility is assumed for any inaccuracies. The user assumes all risks and liability whatsoever in connection with the use of a product or its application. JDSU reserves the right to change at any time without notice the design, specifications, function, fit or form of its products described herein, including withdrawal at any time of a product offered for sale herein. JDSU makes no representations that the products herein are free from any intellectual property claims of others. Please contact JDSU for more information. JDSU and the JDSU logo are trademarks of JDS Uniphase Corporation. Other trademarks are the property of their respective holders JDS Uniphase Corporation. All rights reserved Rev TLT.DS.CMS.AE NORTH AMERICA: JDSU (5378) WORLDWIDE: JDSU WEBSITE: November 2006