High Bandwith Coherent Driver Modulator
Oclaro High Bandwidth Coherent Driver and Modulator is an OIF compliant integrated components for coherent applications, which features a four channel modulator driver integrated circuit co-packaged with two nested modulators, designed to modulate of amplitude and phase of the input light in both polarizations. The MZ structures embed SOA (semiconductor optical amplifiers) that can be used to reduce insertion loss or to balance power in the two polarizations. SOA are current controlled. The device features two SOA per polarization. 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 Thermo-electric 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 to 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 module mechanical outline is the standard OIF Type 1 MSA size (30mm x 12mm x 6.5mm). Electrical interfaces are provided through the 40-pin connector
Supports Coherent transmission up to 64Gbaud/s
Supports modulation formats from DP-QPSK to DP-64QAM
Integrated quad driver and dual nested modulators
-3dB E-O bandwidth: 35GHz
-6dB E-O bandwidth: 45GHz
Input voltage level to driver > 500mV
-5°C to +75°C operating case temperature
Single 3.3V supply
40 pin type-1 OIF MSA compliant pinout
SPI communication interface
Standard Form Factor module outline (30 x 12 x 6.5mm)