A self-frequency-locked multi-wavelength erbium-doped fibre ring laser
Tóm tắt
A self-frequency-locked laser in a 1.55 μm band is demonstrated by adding a segment of samarium-doped fibre (SDF) into an erbium-doped fibre (EDF) ring laser cavity. The narrow band output signal, with a 3 dB down line width of less than 0.15 nm and a side-mode suppression ratio larger than 30 dB, is nearly polarization independent. A multiwavelength EDF ring laser source, using a 1×n synchronous optical switch and n segments of SDF with different lengths, is proposed.
Tài liệu tham khảo
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