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A New Bi-substituted Rare-earth Iron Garnet for a Wideband and Temperature-stabilized Optical Isolator

Published online by Cambridge University Press:  31 January 2011

Min Huang  and
Sho Zhang
Min Huang*
Affiliation:
Physics Department, Zhejiang University, Hangzhou 310027, People's, Republic of China
Sho Zhang
Affiliation:
Materials Science δ Engineering Department and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
*
a)hzraj@public.hz.zj.cn
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Abstract

A wideband and temperature-stabilized optical isolator for 1.55-μm wavelength was developed using a new Bi-substituted holmium–ytterbium ion garnet (HoYbBiIG) single crystal as a Faraday rotator. The optical isolator features 0.34-μm bandwidth, less 0.6 dB insertion loss and over 37 dB backward loss at a wavelength of (1.55 ± 0.17) μm throughout the temperature range from −10 to 60 °C. The Faraday rotation and optical absorption loss of HoYbBiIG were investigated in the near-infrared wavelength region (λ = 0.9 to 1.7 μm). The specific Faraday rotation of Ho0.85Yb1.02Bi1.13Fe5O12 is about −767°/cm at λ = 1.55 μm. The Faraday rotation wavelength and temperature characteristics of HoYbBiIG crystals are also discussed. These results indicate that the Bi-substituted holmium–ytterbium iron garnet single crystals realize a high Faraday rotation stability against temperature and wavelength in the near-infrared region.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 8 , August 2000 , pp. 1665 - 1668
Copyright
Copyright © Materials Research Society 2000

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References

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