A simple method to measure the small-signal impulse response of balanced chains of both clamped and unclamped erbium-doped fiber amplifiers using a recirculating loop is presented, and the experimental results are checked against theory.
Impulse Response Measurement of Balanced Chains of EDFAs in a Recirculating Loop / L. POTI'; BONONI A.; N. ORIENTE. - In: IEEE PHOTONICS TECHNOLOGY LETTERS. - ISSN 1041-1135. - 11(1999), pp. 1384-1386. [10.1109/68.803053]