Journal ArticleDOI
Circuit theory for a class of anisotropic and gyrotropic thin‐film optical waveguides and design of nonreciprocal devices for integrated optics
TLDR
In this paper, a circuit-theoretic treatment for thin-film optical waveguides using a class of real anisotropic and gyrotropic materials is presented based on the two-mode approximation in normal mode theory.Abstract:
A circuit‐theoretic treatment is presented for thin‐film optical waveguides using a class of real anisotropic and gyrotropic materials. The analysis is based on the two‐mode approximation in normal‐mode theory. The terminal behavior of those guides is described by the 2 × 2 transmission matrix and expressions for matrix elements of six systems that are introduced as canonical elements in circuit synthesis are derived. Properties of canonical elements are discussed with particular attention on their reciprocity. Using the transmission matrix, we can treat the design of thin‐film optical devices by a simple matrix operation familiar in conventional transmission‐line circuit synthesis. As a typical application the design of various nonreciprocal integrated‐optical devices is treated in detail. The desired response is synthesized by cascading selected canonical elements in an appropriate order. Examples include the gyrator, unidirectional mode converter, differential phase shifter, isolator, and circulator.read more
Citations
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Journal ArticleDOI
Applications of magneto-optical waveguides in integrated optics: review
Horst Dötsch,N. Bahlmann,O. Zhuromskyy,Manfred Hammer,L. Wilkens,Reinald Gerhardt,Peter Hertel,Anatoly F. Popkov +7 more
TL;DR: Magnetooptical garnets combine high Faraday rotation with low optical losses in the near infrared region where optical communication via glass?ber is established as mentioned in this paper, and they are the only materials discussed to realize non-reciprocal devices as optical isolators and circulators.
Journal ArticleDOI
Integrated Magneto-Optical Materials and Isolators: A Review
TL;DR: The background behind integration challenges, including waveguide birefringence, fabrication tolerances, garnet/semiconductor mismatch, and optimized interfaces will hopefully spark new ideas that will finally enable the realization of integrated optical isolators and circulators.
Journal ArticleDOI
Silicon ring isolators with bonded nonreciprocal magneto-optic garnets.
TL;DR: A ring isolator is demonstrated for the first time by directly bonding a cerium-substituted yttrium iron garnet (Ce:YIG) onto a silicon ring resonator using oxygen plasma enhanced bonding.
Journal ArticleDOI
Magneto-optical non-reciprocal devices in silicon photonics
Yuya Shoji,Tetsuya Mizumoto +1 more
TL;DR: A surface activated direct bonding technique was developed to integrate a magneto-optical garnet crystal on the silicon waveguides and demonstrated an optical isolation of 30 dB and insertion loss of 13 dB at a wavelength of 1548 nm.
Journal ArticleDOI
A new design for an integrated optical isolator
F. Auracher,H.H. Witte +1 more
TL;DR: In this article, the non-reciprocal phase shift of an asymmetric magnetooptic waveguide was used to construct an isolator for MT modes, which does not require phase matching between a magneto-optic and an anisotropic material.
References
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Book
Time-harmonic electromagnetic fields
TL;DR: In this paper, a revised version of the Revised edition of the book has been published, with a new introduction to the concept of plane wave functions and spherical wave functions, as well as a detailed discussion of the properties of these functions.
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TL;DR: In this paper, the authors present a model for waveguide decomposition in terms of waveguide discontinuities and waveguides and cavities, and apply it to artificial dielectrics.
Journal ArticleDOI
Switching and modulation of light in magneto‐optic waveguides of garnet films
TL;DR: In this paper, the authors report the first time switching and modulation of light in a magneto-optic waveguide that is a single-crystal epitaxially grown iron-garnet film.
Journal ArticleDOI
Holographic thin film couplers
H. Kogelnik,T. P. Sosnowski +1 more
TL;DR: In this paper, the authors describe a prism coupler as a convenient means to feed light into a single mode of a guiding thin optical film, which is of great interest for integrated optical devices.
Journal ArticleDOI
Normal‐mode analysis of anisotropic and gyrotropic thin‐film waveguides for integrated optics
TL;DR: In this article, the Rayleigh-Ritz variational technique is applied to thin-film optical waveguides using anisotropic and gyrotropic materials, which may play an important role in the field of integrated optics.