Design of Optical Isolator with TiO2/(CeY)3Fe5O12 Guiding Layer

MRS Proceedings ◽

10.1557/opl.2011.338 ◽

2011 ◽

Vol 1291 ◽

Author(s):

Hideki Yokoi ◽

Shintaro Ikeya ◽

Tsuyoshi Imada

Keyword(s):

Magnetic Field ◽

Phase Shift ◽

Multimode Interference ◽

Optical Isolator ◽

Layer Structures ◽

Optic Waveguide ◽

Multimode Interference Coupler ◽

Magneto Optic

ABSTRACTAn optical isolator with a TiO2/(CeY)3Fe5O12 guiding layer was studied. A nonreciprocal phase shift was calculated in the magneto-optic waveguide with the TiO2/(CeY)3Fe5O12 guiding layer at a wavelength of 1.55 μm. By employing a multimode interference coupler as coupling devices, the total device length of approximately 600 μm was achieved. An interferometric optical isolator with distinct layer structures, which could be operated in a unidirectional magnetic field, was also designed.

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Investigation of Nonreciprocal Characteristics and Design of Interferometric Optical Isolator with Multimode Interference Coupler Operating with a Unidirectional Magnetic Field

Japanese Journal of Applied Physics ◽

10.1143/jjap.43.7045 ◽

2004 ◽

Vol 43 (10) ◽

pp. 7045-7049 ◽

Cited By ~ 3

Author(s):

Jeong-Su Yang ◽

Yuya Shoji ◽

Hideki Yokoi ◽

Masaki Ono ◽

Tetsuya Mizumoto

Keyword(s):

Magnetic Field ◽

Multimode Interference ◽

Optical Isolator ◽

Multimode Interference Coupler

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A novel special optical waveguide structure with magneto-optic nonreciprocal phase shift under transversely applied magnetic field

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019 ◽

10.1117/12.2522615 ◽

2019 ◽

Cited By ~ 1

Author(s):

Dengwei Zhang ◽

Cui Liang ◽

Heming Wei ◽

Abhishek Kottaram Amrithanath ◽

Sridhar Krishnaswamy ◽

...

Keyword(s):

Magnetic Field ◽

Phase Shift ◽

Optical Waveguide ◽

Applied Magnetic Field ◽

Waveguide Structure ◽

Magneto Optic

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A novel special optical fiber with magneto-optic nonreciprocal phase shift under transversely applied magnetic field

Optik ◽

10.1016/j.ijleo.2018.10.189 ◽

2019 ◽

Vol 179 ◽

pp. 641-645

Author(s):

Cui Liang ◽

Dengwei Zhang ◽

Xiaowu Shu ◽

Cheng Liu

Keyword(s):

Magnetic Field ◽

Phase Shift ◽

Optical Fiber ◽

Applied Magnetic Field ◽

Magneto Optic

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Magneto-optic Waveguide in Optical Isolator Employing Nonreciprocal Guided-Radiation Mode Conversion for Athermal Operation

Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF) ◽

10.1364/bgppm.2018.jtu5a.2 ◽

2018 ◽

Author(s):

Salinee Choowitsakunlert ◽

Rardchawadee Silapunt ◽

Hideki Yokoi

Keyword(s):

Mode Conversion ◽

Radiation Mode ◽

Optical Isolator ◽

Optic Waveguide ◽

Magneto Optic

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Fabrication Processes of SOI Structure for Optical Nonreciprocal Devices

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.777.107 ◽

2018 ◽

Vol 777 ◽

pp. 107-112

Author(s):

Salinee Choowitsakunlert ◽

Kenji Takagiwa ◽

Takuya Kobashigawa ◽

Nariaki Hosoya ◽

Rardchawadee Silapunt ◽

...

Keyword(s):

Adhesive Bonding ◽

Mode Conversion ◽

Silicon On Insulator ◽

Radiation Mode ◽

Optical Isolator ◽

Optic Waveguide ◽

Iron Garnet ◽

Relationship Of ◽

The Relationship ◽

Magneto Optic

Fabrication processes of a magneto-optic waveguide with a Si guiding layer for an optical isolator employing a nonreciprocal guided-radiation mode conversion are investigated. The optical isolator is constructed on a silicon-on-insulator (SOI) structure. The magneto-optic waveguide is fabricated by bonding the Si guiding layer with a cerium-substituted yttrium iron garnet (Ce:YIG). The relationship of waveguide geometric parameters is determined at a wavelength of 1550 nm. The results show that larger tolerance for isolator operation can be obtained at smaller gaps between Si and Ce:YIG. Bonding processes including photosensitive adhesive bonding and surface activated bonding are then compared. It is found that the surface activated bonding process is easier to control and more promising than the photosensitive adhesive bonding.

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A Magneto-Optic Waveguide Isolator Using Multimode Interference Effect

Journal of Magnetics ◽

10.4283/jmag.2005.10.2.041 ◽

2005 ◽

Vol 10 (2) ◽

pp. 41-43 ◽

Cited By ~ 1

Author(s):

J.S. Yang ◽

J.W. Roh ◽

W.Y. Lee ◽

S.H. Ok ◽

D.H. Woo ◽

...

Keyword(s):

Interference Effect ◽

Multimode Interference ◽

Optic Waveguide ◽

Magneto Optic

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

Applied Optics ◽

10.1364/ao.43.004745 ◽

2004 ◽

Vol 43 (24) ◽

pp. 4745 ◽

Cited By ~ 9

Author(s):

Hideki Yokoi ◽

Yuya Shoji ◽

Etsu Shin ◽

Tetsuya Mizumoto

Keyword(s):

Magnetic Field ◽

Phase Shift ◽

Optical Isolator

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An Optical Analog-to-Digital Converter with Enhanced ENOB Based on MMI-Based Phase-Shift Quantization

Photonics ◽

10.3390/photonics8020052 ◽

2021 ◽

Vol 8 (2) ◽

pp. 52

Author(s):

Yue Liu ◽

Jifang Qiu ◽

Chang Liu ◽

Yan He ◽

Ran Tao ◽

...

Keyword(s):

Phase Shift ◽

Multimode Interference ◽

Analog To Digital Converter ◽

Effective Number ◽

Digital Converter ◽

Analog To Digital ◽

Mmi Coupler ◽

Simulation Results ◽

Optical Analog ◽

Optical Quantization

An optical analog-to-digital converter (OADC) scheme with enhanced bit resolution by using a multimode interference (MMI) coupler as optical quantization is proposed. The mathematical simulation model was established to verify the feasibility and to investigate the robustness of the scheme. Simulation results show that 20 quantization levels (corresponding to 4.32 of effective number of bits (ENOB)) are realized by using only 6 channels, which indicates that the scheme requires much fewer quantization channels or modulators to realize the same amount of ENOB. The scheme is robust and potential for integration.

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