With more and more ring network construction and the continuous extension of optical links, DCM is used to compensate the dispersion  caused by long-distance transmission. In actual application,  the optical power is relatively low, under this condition, the application of DCM will make the optical power lower, because DCM has a certain loss, the loss is about 3 ~ 10dBm (different compensation distance, different loss), too low optical input is amplified by EDFA, the index will be seriously degraded, especially CNR. For this reason, we have specially developed this OLA1300 series 1550nm EDFA for DCM insertion, the devise is actually composed of two-stage fiber amplifiers, the first stage is a low-noise preamplifier, the second stage is a booster amplifier. In the case of relatively low fiber input, first stage through a low-noise preamplifier, then through DCM, finally through the second stage booster amplifier , It ensures perfect performance values of CNR, CTB and CSO at the some time when dispersion compensation done.

　　OLA1300 series EDFA， its core components adopt the world's top brand pump laser and erbium-doped fiber. The optimized optical design and production process ensure the best optical performance. The perfect electronic controlled modes of APC (automatic power control), ACC (automatic current control) and ATC (automatic temperature control) circuits are adopted to ensure high stability and reliability of the output power, at the same time, it also guarantees excellent optical path index.

　　MPU (microprocessor) with high stability and precision is adopted in the system. The optimized thermal structure design , good ventilation and heat dissipation design ensure the long life and high reliability of the equipment. Based on the powerful network management function of TCP / IP protocol, network monitoring and head-end management can be carried out for the status of multiple node equipment through RJ45 network management interface, supporting multiple power supply redundancy configurations (AC/ DC ), which improved the practicability and reliability of the equipment.

1.It adopts the world's top brand pump laser and erbium-doped fiber.

2.Perfect APC, ACC and ATC optical circuit design ensures low noise, high output and high reliability of the device in the whole operating band (1530 ~ 1563nm).

3.It has the function of automatic protection of low input or no input. When the optical input power is lower than the set value, the laser will automatically shut down to protect the safety of the device.

4.Output adjustable,  adjustment range 0~-4dBm.

5.Max output reaches 27dBm.

6.Convenient and flexible installation of DCM

7.It ensures perfect performance values of CNR, CTB and CSO at the some time when dispersion compensation done.

8.Fully automatic case temperature control and intelligent fans, the fans start to work when the case temperature reaches 35 ℃.

9.Built-in dual power supply, automatically switched and hot plug supported.

10.The operating parameters of the whole machine are controlled by  microprocessor, and the LCD status display on the front panel has many functions such as laser status monitoring, parameter display, fault alarm, network management, etc.; once the operating parameters of the laser deviate from the allowed range set by the software, the system will alarm promptly.

11.Standard RJ45 interface is provided, supporting SNMP and web remote network management.