Compact broadband amplified spontaneous emission in Tm3+-doped tungsten tellurite glass double-cladding single-mode fiber

Pei Wen Kuan, Kefeng Li, Guang Zhang, Xin Wang, Lei Zhang, Gongxun Bai, Yuen Hong Tsang, Lili Hu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

30 Citations (Scopus)


We reported the ~2 μm amplified spontaneous emission (ASE) performance of highly Tm3+-doped (3.76 × 1020ions/cm3) tungsten tellurite single-mode fibers. The double-cladding fiber was pumped by a commercial 792 nm laser diode without any reflectors. Broadband ASE spectra with the bandwidth (FWHM) varying from ~45 nm to ~140 nm were achieved in a fiber length of 34 cm. The maximum output power was ~34 mW, with a slope efficiency of 4.8%. The ASE beam quality factor (M2) was 1.8. The dependence of output power, ASE mean wavelength, and bandwidth on the launched pump power and fiber length were discussed in detail.
Original languageEnglish
Pages (from-to)723-728
Number of pages6
JournalOptical Materials Express
Issue number6
Publication statusPublished - 26 Jul 2013

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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