As 2 S 3 /Sr(Ti 0.7 Co 0.3 )O 3 and As 2 S 3 /Sr(Ti 0.6 Fe 0.4 )O 3 strip-loaded waveguides for integrated magneto-optical isolator applications

Bi, Lei; Kim, Hyunsuk; Hu, Juejun; Kimerling, Lionel C.; Ross, Caroline A.

doi:10.1117/12.809392

Cited by 3 publications

(3 citation statements)

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“…The magneto-optical performance, specifically the NRPS of these waveguides can be simulated by perturbation theory. 18 The NRPS of a TM mode wave in a magneto-optical waveguide can be expressed by the following equation: 10,18 First of all, we notice that the highest NRPS can be achieved at a certain thickness of the As 2 S 3 or the SOI layer. This can be explained as follows: when the As 2 S 3 or SOI layer is thin, the guided mode is highly confined in the YIG layer.…”

Section: Nrps and Fom Simulation Of As 2 S 3 /Yig And Yig/soi Waveguidesmentioning

confidence: 99%

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Fabrication and characterization of As 2 S 3 /Y 3 Fe 5 O 12 and Y 3 Fe 5 O 12 /SOI strip-loaded waveguides for integrated optical isolator applications

Kimerling

et al. 2010

SPIE Proceedings

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We report two novel strategies to integrate magneto-optical oxides on oxidized silicon and SOI platforms based on strip-loaded waveguide structures. By using conventional waveguide fabrication and thin film deposition techniques, strip-loaded waveguides for magneto-optical non-reciprocal phase shift (NRPS) applications can be integrated on a silicon platform. As a demonstration, two structures, i.e. As 2 S 3 /Y 3 Fe 5 O 12 (YIG) and YIG/SOI waveguides are fabricated. Using pulsed-laser deposition followed by rapid thermal annealing, yttrium iron oxide films in which more than 95 vol.% had crystallized into the YIG phase were achieved on both substrates. The optical loss of the As 2 S 3 /Y 3 Fe 5 O 12 waveguide was characterized by a cutback method to be ~10 dB/cm at 1550 nm, while the optical loss of a 450nm wide YIG/SOI waveguide was determined to be 41 dB/cm at 1550 nm by measuring the quality factor Q of a pulley-type ring resonator consisting of such waveguides. The propagation loss of polycrystalline YIG on a SiO 2 /Si substrate was around 50 dB/cm at 1550 nm wavelength. The NRPS and figure of merit of both waveguides were simulated. It is suggested that a Bi:YIG or Ce:YIG layer may be integrated in these waveguide structures to achieve a higher NRPS and figure of merit for optical isolator applications. These waveguide fabrication techniques offer a compact, low cost and etch-free route for integrating magneto-optical materials on a silicon platform, which may be useful for making future integrated optical isolators and other magneto-optical components.

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Section: Nrps and Fom Simulation Of As 2 S 3 /Yig And Yig/soi Waveguidesmentioning

confidence: 99%

“…Controlling the valence states of the transition metal ions may decrease the optical absorption loss and increase the FOM of these materials. 10 From the device point of view, two integrated isolator structures using magneto-optical oxides have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of As 2 S 3 /Y 3 Fe 5 O 12 and Y 3 Fe 5 O 12 /SOI strip-loaded waveguides for integrated optical isolator applications

Kimerling

et al. 2010

SPIE Proceedings

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“…In this article, we will discuss our ongoing progress in material development and device engineering towards enabling a monolithically integrated, high-performance magneto-optical nonreciprocal photonics platform [41][42][43][44][45][46][47][48][49] , in particular focusing on a recently demonstrated single-step growth technique and device results based on the resulting material. The monolithic magneto-optical oxide growth methods are discussed in the next section.…”

Section: Nonreciprocal Photonics: An Overviewmentioning

confidence: 99%