RFQ - L-band bidirectional optical amplifiers

The National Physical Laboratory requirement is for a set of up to 8 (eight) bi-directional, dual channel erbium-doped fibre amplifiers (EDFAs) to support the long-distance dissemination of optical frequency standards. Bi-directional means that light can propagate in either direction through the erbium-doped fibre, the optical path being exactly the same. Dual channel means that each unit contains two independent EDFAs with a common control and monitoring interface. The signals to be amplified are expected to be at...