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Applied Optics

Applied Optics


  • Vol. 20, Iss. 15 — Aug. 1, 1981
  • pp: 2683–2687

Compact polarization-independent optical circulator

M. Shirasaki, H. Kuwahara, and T. Obokata  »View Author Affiliations

Applied Optics, Vol. 20, Issue 15, pp. 2683-2687 (1981)

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This paper introduces a compact polarization-independent optical circulator for communications using multimode optical fibers. This circulator consists of two pairs of rutile prisms used as polarization separators, a YIG Faraday rotator, a ring-shaped magnet, and a quartz halfwave plate. Insertion losses of 2.3 dB including fiber connection losses and isolations of 32 dB at a wavelength of 1.3 μm were obtained using this circulator, and stabilization of the semiconductor laser was confirmed. Details on the design, fabrication, and characteristics of this circulator are presented.

© 1981 Optical Society of America

Original Manuscript: December 9, 1980
Published: August 1, 1981

M. Shirasaki, H. Kuwahara, and T. Obokata, "Compact polarization-independent optical circulator," Appl. Opt. 20, 2683-2687 (1981)

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  1. I. Ikushima, M. Maeda, IEEE J. Quantum Electron. QE-14, 331 (1978).
  2. T. Kanada, K. Nawata, IEEE J. Quantum Electron. QE-15, 559 (1979).
  3. T. Matsumoto, K. Sato, Appl. Opt. 19, 108 (1980).
  4. H. Iwamura, H. Iwasaki, K. Kubodera, Y. Torii, J. Noda, Electron. Lett. 15, 25, 831 (1979).
  5. M. Shirasaki, H. Kuwahara, T. Obokata, in CLEOS 1980, Digest of Technical Papers (Optical Society of America, Washington, D.C., 1980), paper TUAA2.
  6. H. Nishi, M. Yano, Y. Nishitani, Y. Akita, M. Takusagawa, Appl. Phys. Lett. 35, 3, 232 (1979).

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