Local infiltration of planar photonic crystals with UV-curable polymers

El-Kallassi, P.; Balog, Sandor; Houdré, R.; Balet, Laurent; Li, Lianhe; Francardi, Marco; Gerardino, A.; Fiore, Andrea; Ferrini, R.; Zuppiroli, L.

doi:10.1364/josab.25.001562

Cited by 28 publications

(19 citation statements)

References 23 publications

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“…1), PhC devices infiltrated with LCs can be envisaged for reconfiguration applications, switching between different functionalities and adjustment of filter devices. Moreover, recent studies have shown that the selective filling of few holes instead of the whole device further amplifies the potential of PhC infiltration (El-Kallassi et al, 2008). On one hand, the local filling allows one to overcome the decrease of the device performances (e.g.…”

Section: Resultsmentioning

confidence: 99%

Liquid Crystals into Planar Photonic Crystals

Ferrini¹

2009

New Developments in Liquid Crystals

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Section: Resultsmentioning

confidence: 99%

Liquid Crystals into Planar Photonic Crystals

Ferrini¹

2009

New Developments in Liquid Crystals

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“…This study points towards the necessity to use PhC structures infiltrated with moderate or high vapor pressure liquids in a sealed environment with a reservoir liquid to maintain a saturated vapor pressure. Alternatively, the use of a microfluidic circuit bonded onto the PhC may be preferred to continuously flush the LC in the targeted area of the PhC chip [8].…”

Section: Discussionmentioning

confidence: 99%

“…In previous works [8,[20][21][22][23][24][25][26][27]] the samples were immersed in the LC and then retracted, or a macroscopic drop of LC was put on the surface, so that the total amount of liquid was orders of magnitude higher than in the present case. The evaporation time is proportional to the volume-to-surface ratio, and therefore roughly scales with the linear dimension of the system, which is 2 to 3 orders of magnitude smaller for the present system than for the previous cases.…”

Section: Evaporation Of the Liquid Crystalmentioning

confidence: 99%

“…One infiltration method using a computer controlled micropipette actuated in three dimensions [7] enables nearly single hole resolution. Other local infiltration methods rely on local photo-polymerization of a liquid monomer [8], nanofluidic circuits bonded onto the PhC chip [9,10], or lithographic masking [11]. Recently, an approach for creating high Q double heterostructure PhC cavities by selectively infiltrating a PhC waveguide with liquids was proposed [6] and demonstrated in chalcogenide glass [12] and Si membranes [3,13].…”

Section: Introductionmentioning

confidence: 99%

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Liquid crystal dynamics in a photonic crystal cavity created by selective microfluidic infiltration

Casas-Bedoya¹,

Mahmoodian²,

Monat³

et al. 2010

Opt. Express

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Mahmoodian, S.; Monat, C.; Tomljenovic-Hanic, S.; Grillet, C.; Domachuk, P.; Mägi, E.C.; Eggleton, B.J.; van der Heijden, R.W. Published in: Optics Express DOI:10.1364/OE.18.027280Published: 01/01/2010 Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication Citation for published version (APA):Casas Bedoya, A., Mahmoodian, S., Monat, C., Tomljenovic-Hanic, S., Grillet, C., Domachuk, P., ... Heijden, van der, R. W. (2010). Liquid crystal dynamics in a photonic crystal cavity created by selective microfluidic infiltration. Optics Express, 18(26), 27280-27290. DOI: 10.1364/OE.18.027280 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract: A microfluidic double heterostructure cavity is created in a silicon planar photonic crystal waveguide by selective infiltration of a liquid crystal. The spectral evolution of the cavity resonances probed by evanescent coupling reveals that the liquid crystal evaporates, even at room temperature, despite its relatively low vapor pressure of 5 × 10 3 Pa. We explore the infiltration and evaporation dynamics of the liquid crystal within the cavity using a Fabry-Perot model that accounts for the joint effects of liquid volume reduction and cavity length variation due to liquid evaporation. While discussing how the pattern of the infiltrated liquid can be optimized to restrict evaporation, we find that the experimental behavior is consistent with basic microfluidic relations considering the small volumes of liquids and large surface areas present in our structure. Heijden, "Birefringence-induced mode-dependent tuning of liquid crystal infiltrat...

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“…Recently, several of such methods were reported. These include infiltration of several holes by micro-pipetting [17,18,19], photo-darkening of chalcogenide glass [13], local in-situ polymerization of globally infiltrated monomers [20], nano-oxidation by atomic force microscope [21] and controlled deposition of carbonaceous nano-dots [22].…”

Section: Introductionmentioning

confidence: 99%

Wavelength tuning of planar photonic crystals by local processing of individual holes

Kicken¹,

Alkemade²,

Heijden³

et al. 2009

Opt. Express

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Tuning of the resonant wavelength of a single hole defect cavity in planar photonic crystals was demonstrated using transmission spectroscopy. Local post-production processing of single holes in a planar photonic crystal is carried out after selectively opening a masking layer by focused ion beam milling. The resonance was blue-shifted by enlargement of selected holes using local wet chemical etching and red-shifted by infiltration with liquid crystals. This method can be applied to precisely control the resonant frequency, and can also be used for mode selective tuning. © 2009 Optical Society of AmericaOCIS codes: (000.0000) General.

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Local infiltration of planar photonic crystals with UV-curable polymers

Cited by 28 publications

References 23 publications

Liquid Crystals into Planar Photonic Crystals

Liquid Crystals into Planar Photonic Crystals

Liquid crystal dynamics in a photonic crystal cavity created by selective microfluidic infiltration

Wavelength tuning of planar photonic crystals by local processing of individual holes

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