Interferometric optical isolator employing a nonreciprocal phase shift operated in a unidirectional magnetic field

Hideki Yokoi, Yuya Shoji, Etsu Shin, Tetsuya Mizumoto

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

An interferometric optical isolator that employs a nonreciprocal phase shift was studied. The optical isolator consisted of an interferometer with distinct layer structures. A traveling light wave underwent distinct nonreciprocal phase shifts such that the optical isolator could be operated in a unidirectional magnetic field. The optical isolator, in which the waveguide had a HfO2 cladding layer in one of the arms, was designed at a wavelength of 1.55 μm. The propagation distance of the nonreciprocal phase shifter required for the isolator's operation was less than 1.5 mm. The device's total length was less than 2 mm. An optical isolator with distinct layer structures was fabricated and evaluated. An isolation ratio of approximately 9.9 dB was obtained in the unidirectional magnetic field.

Original languageEnglish
Pages (from-to)4745-4752
Number of pages8
JournalApplied Optics
Volume43
Issue number24
DOIs
Publication statusPublished - 2004 Aug 20

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isolators
Phase shift
phase shift
Magnetic fields
Phase shifters
magnetic fields
Interferometers
Waveguides
Wavelength
isolation
interferometers
waveguides
propagation
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Interferometric optical isolator employing a nonreciprocal phase shift operated in a unidirectional magnetic field. / Yokoi, Hideki; Shoji, Yuya; Shin, Etsu; Mizumoto, Tetsuya.

In: Applied Optics, Vol. 43, No. 24, 20.08.2004, p. 4745-4752.

Research output: Contribution to journalArticle

Yokoi, Hideki ; Shoji, Yuya ; Shin, Etsu ; Mizumoto, Tetsuya. / Interferometric optical isolator employing a nonreciprocal phase shift operated in a unidirectional magnetic field. In: Applied Optics. 2004 ; Vol. 43, No. 24. pp. 4745-4752.
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