All-fibre single-mode small-signal amplifier operating near 0.976 μm
- Fiber Optics Research Center, Russian Academy of Sciences, ul. Vavilova 38, 119333 Moscow (Russian Federation)
- G.G. Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, ul. Tropinina 49, 603950 Nizhny Novgorod (Russian Federation)
- College of Optical Sciences, University of Arizona, 1630 East University Blvd., Tucson, AZ 85721-0094 (United States)
We have developed and demonstrated a polarisation-maintaining single-mode ytterbium-doped fibre for light amplification at a wavelength near 0.976 μm in an all-fibre configuration. A distinctive feature of the proposed fibre design is low losses due to fusion splices with standard single-mode fibre having a core diameter of 10 μm, which has made it possible to produce an all-fibre small-signal amplifier with a gain threshold near 3 W and a differential pump-to-signal conversion efficiency of 9.8 % in the saturation regime. The proposed amplifier has been shown to be well-suited for small-signal amplification. In particular, at an input signal power near 1 mW and a gain of 20 dB, the ratio of the amplified signal to the integrated luminescence intensity near 0.976 μm exceeds 20 dB. A 40-dB gain has been demonstrated for an ultrasmall signal of ∼10-μW power. (paper)
- OSTI ID:
- 23005018
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 49, Issue 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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