3970 AGERE | Alldatasheet
Document overview
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Technical content
Features
I Extremely fast time to market and very low engi- neering investment I Superior CNR, CSO, and CTB performance on two high-power optical outputs I Mobile field-tuning application provides real-time performance optimization I High SBS suppression capabilities enhance archi- tectural options and coverage I Multiple programmable tuning optimizations per transmitter facilitate inventory management and performance across architectures
Applications
I High-performance supertrunking links I High-launch power distribution networks I Redundant analog ring architectures
Description
The 3970-type, externally modulated 1550 nm trans- mitter provides CA TV systems integrators one of the fastest and easiest paths to customer value-added, high-performance solutions. The 1550 nm transmitter engine incorporates a source laser optimized to improve transmitter and link performance with high specifications and better sig- nal quality. This advantage drives superior control of RIN through fiber and management of dispersion, stimulated brillouin scattering, and self-phase modu- lation for better noise and distortion performance over long-distance applications. The transmitter embedded system software also pro- vides the ability to load and store multiple configura- tions of the transmitter tuning parameters. In this way, a single transmitter can be optimized for more than one set of link characteristics. This feature simplifies inventory and reduces multiple device management. The software controls, monitors, generates/pro- cesses alarms, and handles faults for transmitter subsystems. The system software also accommo- dates three interfaces for two-way communication with the transmitter. A two-line front panel user inter- face provides system status and telemetry, and accepts user commands. Fine tuning can be accom- plished in the field through an RS-232 serial inter- face. System software upgrades can be downloaded on-the-fly into the transmitter via this interface. A well-defined API at the RS-485 network interface will enable custom applications and network manage- ment systems to communicate with and control the transmitter.
periods can adversely affect device reliability.
- Input range over which specifications are met.
- Received power is 0 dBm. Receiver responsivity is assumed to be 1.0 mA/mW, and receiver equivalent noise current is 8 pA/(Hz)1/2.
- For link consisting of transmitter, EDFA, 65 km of SMF-28 fiber, and receiver. EDFA noise figure is 5 dB minimum. Launch power from EDFA
is 16 dBm minimum. Noise bandwidth is 4 MHz for NTSC, 5 MHz for P AL and Cenelec.
- Measured per NCTA recommended practice, except when measured with appropriate adjustments to the transmitter to prevent AGC-induced
gain change, which corrupts XMOD measurement.
- All specifications apply to both outputs.
Table 1. Optical/Electrical Characteristics
39 NTSC
112 NTSC 60 P AL-D 42 Cen-
42 MHz—750 MHz
42 MHz—870 MHz
Table 2. Power Requirements Table 3. Package Characteristics
1550 TRANSMITTER
36 Vdc-60 Vdc
94 Vac-245 Vac IN
4 Agere Systems Inc. Data Sheet 3970-Type 1550 nm Transmitter October 2001 Laser Safety Information Class IIIb Laser Product FDA/CDRH Class IIIb laser product. All versions are Class IIIb laser products per CDRH, 21 CFR 1040 Laser Safety requirements. All versions are Class 3B laser products per IEC ® 60825-1:1993. The device has been classified with the FDA under an accession number to be determined. This product complies with 21 CFR 1040.10 and 1040.11. Single-mode fiber pigtail and connector options (see Ordering Information, T able 4.) Wavelength = 1500 nm Maximum power = 30 mW Caution: Use of controls, adjustments, and procedures other than those specified herein may result in hazardous laser radiation exposure. DANGER INVISIBLE LASER RADIATION Max. Output: 30 mW, Class IIIb Laser Product DANGER INVISIBLE LASER RADIATION IS EMITTED FROM THE END OF FIBER OR CONNECTOR Avoid direct exposure to beam Do not view beam directly with optical instruments AVOID DIRECT EXPOSURE TO BEAM Wavelength: 1.5 µm INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR Avoid exposure to beam Class 3B Laser Product IEC-60825 1993 Max. Output: 30 mW Wavelength: 1.5 µm
5Agere Systems Inc. Data Sheet October 2001 3970-Type 1550 nm Transmitter
Ordering Information
- For additional ordering information, please contact an account manager at OPTO West, Agere Systems Inc., 1-800-362-3891 (for sales staff, please press option 2).
Table 4. Ordering Information
3970-Type 1550 nm Transmitter October 2001 Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. Copyright © 2001 Agere Systems Inc. All Rights Reserved October 2001 DS00-280OPTO-1 (Replaces DS00-280OPTO) For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http://www.agere.com E-MAIL: docmaster@agere.com N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA: Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F , T ower 2, The Gateway, Harbour City, Kowloon Tel. (852) 3129-2000, FAX (852) 3129-2020 CHINA: (86) 21-5047-1212 (Shanghai), (86) 10-6522-5566 (Beijing), (86) 755-695-7224 (Shenzhen) JAPAN: (81) 3-5421-1600 (T okyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 778-8833, T AIWAN: (886) 2-2725-5858 (Taipei) EUROPE: Tel. (44) 7000 624624, FAX (44) 1344 488 045 IEC is a registered trademark of The International Electrotechnical Commission.