Glass-clad Cr⁴⁺:YAG crystal fiber for the generation of superwideband amplified spontaneous emission

Abstract

Glass-clad ${\mathrm{Cr}}^{4+}:\mathrm{YAG}$ crystal fiber is demonstrated by a codrawing laser-heated pedestal growth method. As much as 2.45 mW of superwideband amplified spontaneous emission (ASE) is generated in the optical fiber communication band with a 3-dB width of 240 nm. The simulation indicates that the ASE power could be in excess of 20 dBm for a $5‐\mathit{\mu }\mathrm{m}$-diameter core at a pump power of 2.5 W.

© 2004 Optical Society of America

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