A Waveguide Polarization Toolset Design Based on Mode Beating

Hutchings, D. C.; Holmes, B. M.

doi:10.1109/jphot.2011.2146765

Cited by 45 publications

(36 citation statements)

References 21 publications

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“…A cross section schematic of the device is shown in Figure 1 ( 21,45 , which provides the degree of nonreciprocal polarization mode conversion (and is directly related to εxz) for the TE-like polarized mode is calculated by finitedifference modesolver and shown in Figure 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 It has been shown that a YIG seedlayer must be at least 45nm thick for complete crystallization of a doped cladding 48 . However, the results shown in Figure 1 (b) suggest that even a 20nm-thin seedlayer, as used in Ref.…”

Section: Abstract: Abstract: Abstractmentioning

confidence: 99%

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Optimized Magneto-optical Isolator Designs Inspired by Seedlayer-Free Terbium Iron Garnets with Opposite Chirality

et al. 2016

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2016) Optimized magneto-optical isolator designs inspired by seedlayer-free terbium iron garnets with opposite chirality. ACS Photonics, 3(10), pp. 1818Photonics, 3(10), pp. -1825Photonics, 3(10), pp. . (doi:10.1021 This is the author's final accepted version.There may be differences between this version and the published version. You are advised to consult the publisher's version if you wish to cite from it.http://eprints.gla.ac.uk/124482/ ∥ School of Engineering, University of Glasgow, Glasgow, Scotland, U.K. ABSTRACT: ABSTRACT: ABSTRACT:ABSTRACT: Simulations demonstrate that undoped yttrium iron garnet (YIG) seedlayers cause reduced Faraday rotation in silicon-oninsulator (SOI) waveguides with Ce-doped YIG claddings. Undoped seedlayers are required for the crystallization of the magneto-optical Ce:YIG claddings, but they diminish the interaction of the Ce:YIG with the guided modes. Therefore new magneto-optical garnets, terbium iron garnet (TIG) and bismuth-doped TIG (Bi:TIG), are introduced that can be integrated directly on Si and quartz substrates without seedlayers. The Faraday rotations of TIG and Bi:TIG films at 1550nm were measured to be +500 and -500°/cm, respectively. Simulations show that these new garnets have the potential to significantly mitigate the negative impact of the seedlayers under Ce:YIG claddings. The successful growth of TIG and Bi:TIG on low-index fused quartz inspired novel garnet-core waveguide isolator designs, simulated using finite difference time domain (FDTD) methods. These designs use alternating segments of positive and negative Faraday rotation for push-pull quasi phase matching in order to overcome birefringence in waveguides with rectangular cross-sections. KEYWORDS KEYWORDS KEYWORDS KEYWORDS: yttrium iron garnet (YIG) seedlayer, terbium iron garnet (TIG), cerium doped yttrium iron garnet (Ce:YIG) , silicon on insulator (SOI) waveguides, Faraday rotation, optical isolator Photonic systems have ever increasing applications in high-speed electronics/ spintronics 1,2 , computing 3 , telecommunications 4,5 and medicine 6 . These systems use light as the signal carrier, and similar to diodes in electronics, photonic systems require non-reciprocal devices with high optical isolation capabilities to protect light sources. Currently, non-reciprocal photonic materials are only available in discrete components. However, if light sources are to be integrated onto photonic chips, non-reciprocal devices will also be needed on those chips. Indeed, isolators will be necessary anywhere in optical circuits where back-reflections are detrimental and likely to occur. Garnets, with their unique magneto-optical (MO) properties have been the material of choice for building passive non-reciprocal devices [7][8][9][10] . In general, non-garnet non-reciprocal devices are active devices that require external power sources, which increase the complexity and cost of the device [11][12][13][14] . MO effects in garnets are the result of non-zero off-diagonal components in the dielectric matrix (ε) ...

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Section: Abstract: Abstract: Abstractmentioning

confidence: 99%

“…First, different seedlayers for Ce:YIG claddings on SOI waveguides will be simulated by the modesolver technique presented in Ref. 45. Next, garnet-core designs with push-pull quasi phase matching will be simulated by Finite Difference Time Domain (FDTD).…”

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confidence: 99%

Optimized Magneto-optical Isolator Designs Inspired by Seedlayer-Free Terbium Iron Garnets with Opposite Chirality

et al. 2016

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“…One of the key advantages of our scheme compared to previously proposed devices [10] is that the individual PRs do not need to produce a specific polarization conversion. Instead, given horizontal input polarization, they must only produce at their output a SOP with PER in the range [15] −4.7 dB < PER < 4.7 dB:…”

Section: Device Operationmentioning

confidence: 99%

“…While the latter can be implemented with judiciously designed waveguide heaters, the former require either specialized fabrication processes and materials [7,8] or extremely tight fabrication tolerances on the order of a few nanometers [9]. Indeed, the polarization controllers proposed in [10,11], which rely on precise PRs, have been experimentally demonstrated only with a hybrid integration approach. The devices presented in [12,13] are based on an alternative architecture but require highperformance polarization rotator-splitters.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of integrated polarization control with a 40 dB range in extinction ratio

Sarmiento-Merenguel

Halir

Roux

et al. 2015

Optica

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Demonstration of integrated polarization control with a 40 dB range in extinction ratio Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1364/OPTICA.2.001019 Optica, 2, 12, pp. 1019Optica, 2, 12, pp. -1023Optica, 2, 12, pp. , 2015 Demonstration of integrated polarization control with a 40 dB range in extinction ratio Polarization controllers are key elements in many fields of optics, including coherent communications, optical imaging, and quantum applications. Here we present a technology-independent polarization controller scheme based on electrically tunable phase shifters and polarization rotators with largely relaxed fabrication tolerances. Using this scheme, we experimentally demonstrate a fully integrated polarization controller in the silicon-on-insulator platform that is tunable over the complete C-band and achieves a polarization extinction range of 40 dB (20 dB). These results constitute, to the best of our knowledge, the highest polarization extinction range achieved in a fully integrated device, and overcome the existing limitation in the trade-off between integration and performance in polarization management circuits.

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“…Furthermore, the miniaturization of devices allows for high speed and low drive voltage system requirements to meet the demands of current and future optical communications based applications. An important element in polarization modulation/control is the polarization mode convertor (PMC), which can be implemented as a modal evolution or as a mode beating element [2]. Mode beating provides the most compact solution, and various designs of mode beating PMCs have been realized and demonstrated in GaAs/AlGaAs [3], InP/InGaAsP [4] and silicon on insulator (SOI) [5] based material systems.…”

Section: Introductionmentioning

confidence: 99%

Generation of High Speed Polarization Modulated Data Using a Monolithically Integrated Device

Naeem

Haji

Holmes

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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A Waveguide Polarization Toolset Design Based on Mode Beating

Cited by 45 publications

References 21 publications

Optimized Magneto-optical Isolator Designs Inspired by Seedlayer-Free Terbium Iron Garnets with Opposite Chirality

Optimized Magneto-optical Isolator Designs Inspired by Seedlayer-Free Terbium Iron Garnets with Opposite Chirality

Demonstration of integrated polarization control with a 40 dB range in extinction ratio

Generation of High Speed Polarization Modulated Data Using a Monolithically Integrated Device

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