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www.olsontech.com
INTRODUCTION
Olson Technology, Inc., a major manufacturer in fiber optic components, provides a wide range of Erbium Doped Fiber Amplifiers
(EDFA’s), for 1550nm HFC networks. They feature low noise figure, stable output power and excellent environmental stability.
EDFA’s are comprised of two main parts: the gain module and the external control system. The gain module amplifies the optical
signal in 1550nm wavelength band (1540-1560nm typically). It is made of high quality optical components, and carefully designed
to maximize overall performance. Low power EDFA’s may only have a single pump, while high power units can have up to three
pumps.
The external control system allows the operator to ensure that the gain module is working optimally. Controlled by microprocessor,
it monitors the states of the gain module and adjusts all the parameters to ensure a stabilized output power of the gain module.
Moreover, this system provides warnings via the front panel indicator LED and a digital display. The LCD on the front panel shows
the detailed working parameters of the EDFA. This information can also be accessed via the standard RS-232 interface via an ex-
ternal computer.
Figure 1 - Block Diagram of OTEB-CO-B Series EDFA
