Description

Representing the latest advancements in high-speed lithium niobate technology, the 40 Gbits/s electrooptic modulator is designed for long-wavelength, single-mode, external amplitude modulation applications. It uses an integrated Mach-Zehnder configuration to convert single polarization CW light from a semiconductor (DFB) laser into a time-varying optical output signal. Using the source in the CW mode eliminates the need for demanding, high-speed performance from the laser and reduces its cost.

Features

■ Ti-diffusion process

■ Dual-drive technology

■ Thin-film, 50 Ω termination in package for minimal reflections

■ Low modulation voltages

■ Tested to Telcordia Technologies * 468

■ Angled interfaces for minimal optical reflections

■ Hermetic package

■ Separate dc bias electrode

Benefits

■ Excellent long-term bias stability over a full operational temperature range of 0 °C to 70 °C

■ Adjustable chirp for long distances at high bit rates

■ Internal polarizer

Applications

■ Digital high-speed telecommunications:

— SONET OC-768

— Undersea communications

■ Internet data communications

■ SONET test equipment