400A-22ST VIAVI Solutions Laser Transmitter

The Model 400A Laser Transmitter is an economical high speed optical signal source designed for general laboratory use. It accepts analog or digital signals to beyond 1GHz and generates a fiber-coupled optical output for testing photo-detectors, receivers, or any component requiring a stable, flexible optical source. The Model 400A is also usable as either an analog or digital transmitter source in fiber optic link driver applications.

In the digital mode, the unit accepts any input pulse pattern from DC to isolated sub-nanosecond pulses, and in continuous or burst-mode format. The digital input logic threshold is front-panel adjustable to enable optical output pulse width optimization. The laser bias point is rear-panel adjustable for extinction ratio and waveform control over a limited range.

In the analog mode, the laser output is set at a 50% bias level, and the input analog signal is routed directly to the laser through a termination and surge protection circuit. The optical modulation index is settable by input level from 0% to 90%, minimum. This operating mode is highly useful for testing the linear bandwidth of detectors and detector-receiver combinations to beyond 1GHz.

A universal optical connector interface on the front panel permits the optical connector to be user-changeable. Simple screw-on connector adapters for all industry-standard connector types are available. This connector also allows easy optical cleaning without removing the instrument cover. When the instrument is not in use, the permanently attached dust cap simply snaps in place over any adapter.

BCP was acquired by JDSU in 1998.