Microwave Signal Generation From a Dual-Wavelength Single-Frequency Highly <formula formulatype="inline"><tex Notation="TeX">$\hbox{Er}^{3+}/\hbox{Yb}^{3+}$</tex></formula> Co-Doped Phosphate Fiber Laser
Narrow linewidth microwave signals generated from a heterodyne detection configuration of a dual-wavelength (DW) single-frequency highly Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped phosphate fiber laser is presented. The oscillating cavity of the fiber laser consists of a dual-c...
Main Authors: | , , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
IEEE
2013-01-01
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Series: | IEEE Photonics Journal |
Subjects: | |
Online Access: | https://ieeexplore.ieee.org/document/6657711/ |
Summary: | Narrow linewidth microwave signals generated from a heterodyne detection configuration of a dual-wavelength (DW) single-frequency highly Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped phosphate fiber laser is presented. The oscillating cavity of the fiber laser consists of a dual-channel narrow-band fiber-Bragg-grating (DC-NB-FBG), a 0.7-cm-long Er<sup>3+</sup>/ Yb<sup>3+</sup> co-doped phosphate fiber and a wideband FBG (WB-FBG). The wavelength selecting gratings are spatially separated to create partially separated resonant cavities. Highly Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped phosphate fiber ensures that the mode competition is relatively weak under low pump power. DW single-frequency lasing with laser linewidths of 3 kHz is achieved. A 12.014-GHz microwave signal with a 3-dB linewidth of 3 kHz is obtained from the heterodyne detection of the DW fiber laser. |
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ISSN: | 1943-0655 |