Digital EDFA solution

EDFA (Erbiur Doped Fiber Amplifer) is a representative one of fiber amplifiers. 

Since the EDFA has a working wavelength of 1550 nm, which is consistent with the low loss band of the optical fiber and its technology is relatively mature, it is widely used.

An amplifier is a circuit that has a power gain greater than one. 

An amplifier can either be a separate piece of equipment or an electrical circuit contained within another device. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment.

The EDFA has an optical power output stabilization circuit and a laser thermoelectric cooler temperature stability control circuit to ensure the best performance of the whole machine and the long life of the laser.

The microprocessor software monitors the operating state of the laser. Once the operating parameters of the laser deviate from the allowable range set by the software, the microprocessor will automatically turn off the laser power.

The characteristics of solution

XILINX /XC6SLX45, rich interface resources, flexible configuration.

Silicon Labs / C8051F120 High Speed 8051 Core, Pipeline Instructions

INTERSIL /ISL8088IRZ, up to 450mA drive capability internal current mode compensation

100% maximum duty cycle for lowest pressure optional forced PWM mode and PFM mode

High performance, low power consumption

The XILINX /XC6SLX45 main processor is responsible for high-speed operations and processing high-speed data. 

Silicon Labs / C8051F12 coprocessor, responsible for low-speed peripherals such as IIC, SPI and other peripheral interfaces, sensors, I / O and so on.

Digital EDFA solution block diagram