This optical modulator is a LiNbO3 DP-BPSK Dual-Drive Mach-Zehnder modulator with modulation speed of up to 21.5Gbaud.This modulator comprises 3dB coupler,two BPSK modulators,polarization rotator followed by the polarization beam combiner and the built-in monitor PD chips for automatic bias control (ABC) for the compensation system of DC-drift and other phenomena.
Description This optical modulator is a LiNbO3 DP-BPSK Dual-Drive Mach-Zehnder modulator with modulation speed of up to 21.5Gbaud. This modulator comprises 3dB coupler, two BPSK modulators, polarization rotator followed by the polarization beam combiner and the built-in monitor PD chips for automatic bias control (ABC) for the compensation system of DC-drift and other phenomena. The FTM7980EDA modulator supports the advanced Dual Polarization-DPSK modulation scheme. In general, the DPSK format is particularly suitable for 40G ULH applications; in combination with coherent detection the 2*20G polarization multiplexed version is very attractive as an upgrade to existing 10G links to a 40G transmission rate without modification of the link.
Features
43Gbps (21.5Gbaud) Mach-Zehnder modulator for “DP-BPSK” transmission format
2 PSK modulators and Polarization Beam Combiner are integrated in one package
RF interface: GPPO dual drive
Low drive voltage: < 3.5V (2Vp)
Built-in monitor photo diodes for each polarization
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