Patent · US Active

Fiber-amplifiers with all-fiber optical isolator

US8755642B2 · kind B2 · utility

2Cited by
6References
12Claims
0Family size

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Inventor

Key dates

Filing dateAug 12, 2013
Grant dateJun 17, 2014
Priority date—
Expiry dateAug 12, 2033

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F1/0081
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Fiber-amplifier device the light-path of which is devoid of a free-space element. The system device an all-fiber-optic Faraday rotator and isolator. The device has a multicomponent glass optical fiber having a core having a first doping concentration of 55%-85% (wt./wt.) of a first rare-earth oxide and a the isolator includes at least three magnetic cells with throughout bores hosting an optical fiber, the same magnetic poles of two immediately neighboring cells facing each other. The first rare-earth oxide includes one or more of Pr2O3, Nd2O3, Pm2O3, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3, La2O3, Ga2O3, Ce2O3, and Lu2O3.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.