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The optical modulator is maher zed modulator, four arm RF drive,suitable for modulation format DP-QPSK;guaranteed bias input and output,the highest speed can reach 600Gbps;C+L band work.
NeoPhotonics Class 60，偏振復用，相干驅動器調制器（CDM）具有共封裝的InP調制器，具有四個線性，高帶寬，差分驅動器，并且設計用于低調制電壓或“ Vpi”，低插入損耗和高消光比。該緊湊型包裝符合OIF實施協議＃OIF－HB－CDM－1.0的尺寸要求。C+L波段工作.
600Gbps DP-16QAM LN Modulator, InP modulator
The Lumentum high-bandwidth coherent driver modulator (HB-CDM) is an OIF-compliant integrated component for coherent applications and features a four-channel modulator driver integrated circuit, co-packaged with two nested modulators, designed to modulate amplitude and phase of the input light in both polarizations. The Mach-Zehnder (MZ) structures embed semiconductor optical amplifiers (SOAs) that can be used to reduce insertion loss or to balance power in the two polarizations. The device features two SOAs per polarization and are current controlled. This configuration allows the design of transceivers with a single laser split between transmitter and local oscillator. The temperature of the InP modulators is controlled by a thermoelectric cooler.
Control of the modulators is via analog voltage inputs to the module. Control of the driver is via SPI digital control interface, plus analog control signals. The device features monitoring photodiodes to detect power and provide feedback for control loops.
The module has one input fiber (from a CW laser) and one output fiber. The RF input contacts are located at the rear of the package (opposite the fibers) and use a GSSG pattern. 40 low-speed contacts located at the side of the package provide power supply, control signals, and the digital SPI interface.
The HB-CDM mechanical outline is the standard OIF Type 1 MSA size (30 mm x 12 mm x 6.5 mm). Electrical interfaces are provided through the 40-pin connector.
