✦ LIBER ✦

Experimental research on mode properties of large mode area photonic-crystal fiber laser

✍ Scribed by Wei Zhang; Yigang Li; Peiguang Yan; Lei Ding; Jian-Ping Zhu; Ke-Cheng Lu

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 212 KB
Volume: 46
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.20925

No coin nor oath required. For personal study only.

✦ Synopsis

two traces shown in Figure 5, the DOP variations can be greatly improved from 60% to 13%. In particular, at a long wavelength of 1580 nm, the DOP can be increased from 20% to 80%. This laser with an A-D-A SOP feedback-control circuit can be applied in wavelength-response measurement for wavelength division multiplexing (WDM) photonic devices or subsystems with polarizationrelated parameter measurements.

4. CONCLUSION

In this paper, an external-cavity-grating-coupled WTL has been demonstrated to successfully operate at a stable power level in which ellipticity and DOP are both well controlled. To achieve the desired effects in A-D-A feedback control circuit, the proposed control programs are installed in the microprocessor. Hence, the polarization state can be controlled by feedback and also be stabilized at any SOP. In our feasibility verification, the wavelength can be tuned with benefits of high DOP and low ellipticity. Given the improved quality, the polarization-controlled WTL sources are expected to be used in WDM photonic-device fasttesting and fiber-communication systems.

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