In situ fabrication of a tunable microlens

Zhang, Lei; Wang, Zhiyuan; Wang, Yichuan; Qiu, Rui; Fang, Wei; Tong, Limin

doi:10.1364/ol.40.003850

Cited by 5 publications

(3 citation statements)

References 30 publications

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“…The balance between the applied pressure and the interfacial tension can be utilized to maintain and tune the curvature of a liquid lens interface. A spherical liquid-based microlens with pre-defined focal length can be achieved by filling uncured PDMS into microfluidic channels [54,55]. The interface curvature can be controlled by the surface interaction between the liquid and the channel wall.…”

Section: Interfacial Tension Based Lensesmentioning

confidence: 99%

Toward the commercialization of optofluidics

Song

Nguyen

Tan

2017

Microfluid Nanofluid

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Optofluidics is a marriage between the field of optics and microfluidics. This field aims at providing practical solutions with the integration of optical tools into lab-on-chip systems. Often, this results in opportunities for commercialization due to the advancement offered after the integration. Although numerous novel functions and properties have been demonstrated with the combination of optics and microfluidics, the market has witnessed only few transferals of optofluidic technologies from academic laboratories. This stemmed from a lack of a "killer applications" despite several decades of development. Therefore it is necessary to have a retrospective review on this topic, particularly on the basic optofluidic components, to analyze what might be the hurdles to stop the market uptake of optofluidic devices. Specifically, this review paper is focused on discussion of optofluidic components in terms of fabrication standardization, device & operational cost and practicability for end-users. It is believed that these factors play important roles in the market uptake of a novel technology. We then provide perspectives on how to align the development of optofluidics with the requirements imposed by the industry.

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Section: Interfacial Tension Based Lensesmentioning

confidence: 99%

Toward the commercialization of optofluidics

Song

Nguyen

Tan

2017

Microfluid Nanofluid

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“…So far, a variety of effective coupling approaches have been demonstrated, [5] including end-fire coupling, [6][7][8][9][10][11] grating coupling, [12][13][14][15][16][17][18] and fiber-taper-assisted adiabatic coupling. [19][20][21][22][23][24] While they have been successfully applied with high efficiency and broad bandwidth, [8,24] high flexibility and large alignment tolerance remain challenging. To overcome these limitations, recently, photonic wire bonding based on adiabatic coupling method is proposed.…”

Section: Introductionmentioning

confidence: 99%

Efficient Fiber‐to‐Chip Interface via an Intermediated CdS Nanowire

Jin

Yang

Huang

et al. 2023

Laser & Photonics Reviews

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An efficient fiber-to-chip interface via an intermediated CdS nanowire is demonstrated. The fiber mode is firstly squeezed through a fiber taper drawn at the end of a single-mode fiber, then evanescently coupled into an intermediated CdS nanowire with a longitudinally tapering profile, and finally coupled into an on-chip silicon waveguide (SiW) via a waveguide taper fabricated on it. Since the fiber-nanowire-SiW cascade structure is designed to match effective indices in each coupling area, such a fiber-to-chip interface ensures a bidirectional coupling efficiency up to 90% and a 3-dB bandwidth over 100 nm in experiments. The difference of coupling efficiencies between the TM or TE modes is less than 0.5 dB in the spectral range of 1545-1635 nm. The footprint of the on-chip coupling structure is about 10 µm in size. The results may provide a compact, efficient, and versatile fiber-to-chip interface in applications including optical interconnects, coherent communication, and quantum optical circuitry.

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“…The diffractive microlens, as one of the most important components in micro optical systems, is widely used in beam focusing 1 – 4 and object imaging 5 – 7 . Therefore, scientists make great efforts on its design 8 – 13 , performance analysis 14 – 18 , fabrication 19 – 22 and practical applications 23 – 25 . In past literatures, the cylindrical diffractive microlens (CDM) is generally designed from a refractive microlens by removing the vertically abundant 2 π phases 14 , 26 .…”

Section: Introductionmentioning

confidence: 99%

New design model for high efficiency cylindrical diffractive microlenses

Zhao

Feng

et al. 2017

Sci Rep

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A new model, i.e., the decreasing thickness model (DTM) is proposed and employed for designing the cylindrical diffractive microlenses (CDMs). Focal performances of the designed CDMs are theoretically investigated by solving Maxwell’s equations with the boundary element method. For comparison, the CDMs designed by the traditional equal thickness model (ETM) are also studied. Theoretical simulations demonstrate that focal performances of the designed CDMs are improved a lot via replacing the traditional ETM with the proposed DTM. Concretely, the focal efficiency is heightened and the focal spot size is shrunk. Experimental measurements verify the theoretical simulations well. Especially, the above-mentioned improvements become more prominent for the CDM with a higher numerical aperture.

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In situ fabrication of a tunable microlens

Cited by 5 publications

References 30 publications

Toward the commercialization of optofluidics

Toward the commercialization of optofluidics

Efficient Fiber‐to‐Chip Interface via an Intermediated CdS Nanowire

New design model for high efficiency cylindrical diffractive microlenses

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