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Pump power depreciation by photodarkening in ytterbium-doped fibers and amplifiers

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Pump power depreciation by photodarkening in ytterbium-doped fibers and amplifiers
นักวิจัย : Li, Nanxi , Yoo, Seongwoo , Yu, Xia , Jain, Deepak , Sahu, Jayanta K.
คำค้น : DRNTU::Engineering::Electrical and electronic engineering
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Li, N., Yoo, S., Yu, X., Jain, D., & Sahu, J. K. (2014). Pump Power Depreciation by Photodarkening in Ytterbium-Doped Fibers and Amplifiers. IEEE Photonics Technology Letters, 26(2), 115-118. , 1041-1135 , http://hdl.handle.net/10220/19303 , http://dx.doi.org/10.1109/LPT.2013.2289965
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : IEEE photonics technology letters
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In this letter, pump power depreciation due to photodarkening effects in an ytterbium doped fiber (YDF) is investigated. Photodarkening is monitored by measuring the transmitted power at visible and pump wavelengths simultaneously, which renders direct quantitative measurement of pump power reduction rather than excess background loss. Our observation of substantial reduction in the pump power and the shortened fluorescence decay time in the photodarkened fiber indicates that the photodarkening influences pump efficiency. The effect of the photodarkening in a device level is also investigated by observing the performance of the YDF amplifier implementing the same YDF. The pump power depreciation of this fiber amplifier is quantitatively investigated by numerical simulation. The results suggest that operating at a saturated regime helps to subdue the photodarkening, with explanation in terms of population inversion density provided. The level of power depreciation is calculated to be 15%-30%, which matches our experimental observation

บรรณานุกรม :
Li, Nanxi , Yoo, Seongwoo , Yu, Xia , Jain, Deepak , Sahu, Jayanta K. . (2557). Pump power depreciation by photodarkening in ytterbium-doped fibers and amplifiers.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Li, Nanxi , Yoo, Seongwoo , Yu, Xia , Jain, Deepak , Sahu, Jayanta K. . 2557. "Pump power depreciation by photodarkening in ytterbium-doped fibers and amplifiers".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Li, Nanxi , Yoo, Seongwoo , Yu, Xia , Jain, Deepak , Sahu, Jayanta K. . "Pump power depreciation by photodarkening in ytterbium-doped fibers and amplifiers."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Li, Nanxi , Yoo, Seongwoo , Yu, Xia , Jain, Deepak , Sahu, Jayanta K. . Pump power depreciation by photodarkening in ytterbium-doped fibers and amplifiers. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.