Efficient operation and characterization of distributed feedback Er3+-doped fiber lasers via the 520-nm transition band

Loh, W.H., Butterworth, S.D., Clarkson, W.A., Samson, B.N. and de Sandro, J.P. (1997) Efficient operation and characterization of distributed feedback Er³⁺-doped fiber lasers via the 520-nm transition band. In Conference on Optical Fiber Communication. IEEE. pp. 294-295 . (doi:10.1109/OFC.1997.719904).

Record type: Conference or Workshop Item (Paper)

Abstract

Single-frequency distributed feedback (DFB) and distributed Bragg reflector (DBR) Er³⁺-fiber lasers are attractive for applications in optical communications and sensor systems. However, as the cavity lengths need to be short (a few cm) for robust single-mode operation, pump absorption is low, limiting laser output powers to < 1mW. Higher laser output powers are clearly desirable, e.g., for CATV applications. Previous ways suggested for dealing with this issue include redirecting the unabsorbed pump-to-power fiber amplifier, intracavity pumping, or increasing the 980-nm absorption with co-doped Yb3+:Er3+ phosphosilicate fibers.

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