Lucent Announces New Fiber Optic Products
Source: Compound semiconductor staff
Murray Hill, NJ and Munich, Germany. Lucent Technologies Microelectronics Group has announced a series of new optical networking products at the 26th European Conference on Optical Communication (ECOC) in Munich, Germany (September 4-6, 2000). These include a 40 Gb/s optical receiver, 20-channel tunable integrated laser module for high-speed optical networking systems and new 10 Gb/s ICs for SDH and SONET applications.
40 Gb/s Optical Receiver
The 40 Gb/s R768 receiver consists of a high-speed photodetector and a wide-band linear preamplifier in a pigtailed metal package. The R768 is designed for use in single-mode, high-speed telecommunications applications such as long-haul and submarine transport networks at the synchronous optical networking (SONET) OC-768 and the synchronous digital hierarchy (SDH) STM-256 data rate of 42.5 Gb/s. In addition, the R768 can be used for line terminal and digital video equipment, and very high-speed router-to-router connections.
"Lucent s new receiver is the second product to join our line of 40-Gb/s optoelectronic components," said Kim Trapp, marketing director for Lucent s Microelectronics Group. "Last year we introduced a 40 Gb/s lithium niobate modulator, which is still the highest speed-device commercially available for optical transport systems."
The receiver operates from a 6 V power supply and is fully operational through the L-band (1.6 micron) wavelength range. Initial-volume production is expected by the second quarter of 2001.
20-Channel Tunable Integrated Laser Module
Lucent also announced the company s first 20-channel continuous wave (CW) tunable laser module for both short- and long-haul, high-speed optical networking systems, providing twice as many tunable channels as its current generation of tunable transmitters. Based on tunable electroabsorptive modulated laser (EML) technology, the CW20P includes a highly integrated single-chip 1.5 micron DBR laser, booster amplifier and photodetector. It also features built-in patented LambdaLock spectral stabilization, which "locks" the laser emission to any of 20 adjacent 50 GHz channels and provides a stability of better than 20 pm.
The new laser module is designed to work with Lucent s 10 and 40 Gbit/s lithium niobate modulators and Lucent s C-48 family of cooled laser transmitters. Complete with integrated laser driver, the CW20P operates at power supplies of 5.0 and 3.3 V and has a power output of 20 mW. The device operates over the C-band wavelength range (1528.77 - 1563.86 nm).
10 Gb/s ICs for Optical Networking Systems
Finally, Lucent chose ECOC to unveil a set of high-speed ICs for 10 Gb/s SONET and SDH optical networking systems. The new ICs include SiGe-based clock synthesizer/data multiplexer and clock recovery/data demultiplexers, in addition to a laser driver, modulator driver, limiting amplifier and transimpedance amplifier (TIA) manufactured with a 0.25 micron GaAs PHEMT process. These new ICs offer a comprehensive OC-192 (STM-64) solution for digital cross connects, OADMs, switches, routers, repeaters and access equipment.
The modulator driver is available with either a -5.2 V or -6.8 V power supply and is capable of driving lithium niobate modulators. The limiting amplifier provides 33 dB of gain and 8 GHz of bandwidth and has a typical single-ended input sensitivity of 7 mV peak-to-peak. The TIA is a hybrid IC that combines a TIA die with filtering to achieve an ultra-wide dynamic range. Volume production is expected by the first quarter of 2001.
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