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