40Gbps PM-BPSK Modulator, Fujitsu FTM7981EDA, Lithium Niobate DP-BPSK Modulator
This optical modulator is a Ti:LiNbO3 DP-BPSK Sigle-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 FTM7981EDA 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 single drive
- Low drive voltage: < 3.5V (2Vp)
- Built-in monitor photo diodes for each polarization.
Application
- High end 40G transmission
• DWDM System
• ULH and Submarine over existing 10G links
• 40G Transponders and Line-cards - Radio over Fiber Transmission
