Abstract

An infrared Faraday rotator embedded in a fiber is proposed and fabricated using Gd_3−xBi_xFe₅O₁₂ single crystals; the specific bismuth substitution x was ∼0.9 in our experiments. Insertion losses for multimode and single-mode fibers are 2.9 and 4.3 dB at the 1.29-μm wavelength, respectively, and 4.3 and 6.7 dB at the 0.78-μm wavelength, respectively. It is shown that insertion losses would be decreased by increasing the bismuth substitution x. The fiber-embedded micro-Faraday rotator can be used in a fiber isolator not only for 1.3 μm but also for 0.8-μm wavelength regions.

© 1985 Optical Society of America

Fiber Faraday rotator

Kazuo Shiraishi, Satoshi Sugaya, and Shojiro Kawakami
Appl. Opt. 23(7) 1103-1106 (1984)

Microisolator

Kazuo Shiraishi, Satoshi Sugaya, Kazutaka Baba, and Shojiro Kawakami
Appl. Opt. 25(2) 311-314 (1986)

Temperature-stable Faraday rotator material and its use in high-performance optical isolators

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Compact optical isolator for fibers using birefringent wedges

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High-isolation optical isolator using a BiCaInVIG single crystal

Xiaoming Ma and Shangping Tao
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