WJ Communications announces new modulator drivers for fiber optic networks

WJ Communications, Inc. announced the availability of a driver amplifier supporting data rates up to 12.25 Gbps for use in OC-192 systems.

WJ Communications, Inc. (Nasdaq:WJCI) announced the availability of a driver amplifier supporting data rates up to 12.25 Gbps for use in OC-192 systems. The SA1137 is an addition to WJ Communications' series of hybrid-based products targeted at existing and emerging fiber optic networks. WJ provides many of the key RF components that are used in the complex circuitry of fiber optics transceivers and transverters.

The SA-1137 provides an 8V(pk-pk) output capable of driving LiNi03 modulators. Fast rise and fall times (25ps), less than 5 percent crossover distortion with less than 10 percent overshoot ensure reliable signal recovery. "The SA1137 modulator driver was designed for applicability to existing and future OC-192 systems," says James A. Mravca, vice president, fiber optic products. The SA1137 includes integral optical modulator DC bias and gain controls for ease of integration with the modulator. Further performance optimization is achieved with cross-over adjustment. The SA1137 provides cross-over point adjustment to accommodate modulator interface variability. Dynamic, real-time control of the SA1137 output is achieved using the detector and reference voltage outputs.

The SA1137 is 1.41" L x 0.95" W x 0.58" H, excluding the SMA connectors. Maximum bias power consumption is +11VA@ 300mA and -5V @ 25mA over the operating temperature range of -5(Degree)C to +75(Degree)C. All units are fully tested, and WJ's optical test bed can be used for SA1137 integration and testing with customer modulators.

About WJ Communications:

WJ Communications, headquartered in San Jose, Calif., designs, develops and manufactures broadband communications products for the current and next generation fiber optic, broadband cable and wireless communications networks. For more information, visit www.wj.com.

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