Microlenses with defined contour shapes

Cadarso, Víctor J.; Perera-Núñez, J.; Jacot-Descombes, Loïc; Pfeiffer, K.; Ostrzinski, Ute; Voigt, Anja; Llobera, Andreu; Grützer, G.; Brugger, Jürgen

doi:10.1364/oe.19.018665

Cited by 25 publications

(25 citation statements)

References 12 publications

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“…Differences between

ν_{m a x}

and

ν_{m i n}

up to 85° for 100 micron diameter platforms have been achieved by this method [68]. Pre-patterning pillars on substrates has also been used to obtain different lens contour shapes such as circular, elliptical or toroidal [69]. The generation of concave microlenses has also been demonstrated by inkjetting droplets of UV curable prepolymers on photolithographically prepared SU-8 wells [70].…”

Section: Inkjet Printing For Micro-optics and Integrated Optics Famentioning

confidence: 99%

Inkjet Printing of Functional Materials for Optical and Photonic Applications

et al. 2016

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Inkjet printing, traditionally used in graphics, has been widely investigated as a valuable tool in the preparation of functional surfaces and devices. This review focuses on the use of inkjet printing technology for the manufacturing of different optical elements and photonic devices. The presented overview mainly surveys work done in the fabrication of micro-optical components such as microlenses, waveguides and integrated lasers; the manufacturing of large area light emitting diodes displays, liquid crystal displays and solar cells; as well as the preparation of liquid crystal and colloidal crystal based photonic devices working as lasers or optical sensors. Special emphasis is placed on reviewing the materials employed as well as in the relevance of inkjet in the manufacturing of the different devices showing in each of the revised technologies, main achievements, applications and challenges.

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“…Differences between

ν_{m a x}

and

ν_{m i n}

Section: Inkjet Printing For Micro-optics and Integrated Optics Famentioning

confidence: 99%

Inkjet Printing of Functional Materials for Optical and Photonic Applications

et al. 2016

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“…Many materials are available for forming the master. In our study, we employed EpoCore and EpoClad as the master materals for their excellent processibility by photolithography [15], [23], [25]. As they are also the materials used for forming the waveguides in the PCB, we enjoy the convenience of using the same materials for forming the master and the waveguides.…”

Section: Fabrication Processmentioning

confidence: 99%

“…They are easy to handle and can be cured by heating and/or exposing to UV light. In fact, they are widely used in making various kinds of optical components [25]. Thanks to their special cross-linking properties, these polymer materials can withstand the harsh conditions in the PCB lamination process (a temperature higher than 185 • C and a pressure of ∼23 bar), which makes them particularly suitable for the production of waveguide-embedded OPCBs.…”

mentioning

confidence: 99%

Industry Compatible Embossing Process for the Fabrication of Waveguide-Embedded Optical Printed Circuit Boards

Jin

Chiang

Chan

et al. 2013

J. Lightwave Technol.

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We demonstrate a cost-effective embossing process for the fabrication of waveguide-embedded optical printed circuit boards (OPCBs). The process involves the application of a polydimethylsiloxane mold for the production of polymer waveguides on a copper-clad FR4 substrate followed by the conventional lamination process. The embossing process is carefully tailored for the commercial polymer materials that are developed specifically to withstand the high temperature and high pressure environment during lamination. With this process, we are able to produce highquality waveguide-embedded OPCBs with good repeatability. Our typical OPCB samples, each of which consists of 12 130-mm long fully embedded channel waveguides with a core size of approximately 50 × 50 μm and a pitch of 250 μm, show an average optical loss in the range 0.16-0.22 dB/cm at the wavelength 850 nm. The OPCBs survive the reflow process at 245 • C with a small change in the optical loss. The embossing process can be readily integrated with the existing PCB manufacturing process and thus offers a practical solution to mass production of OPCBs.Index Terms-Optical interconnect, optical polymer, optical printed circuit board (OPCB), polymer waveguide, waveguide fabrication.

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“…Molding is suitable for mass production, but it requires a high precision mold that still needs costly fabrication. Lithography is a novel approach to get microlens, where thermal reflow method [9] or inkjet method [10] can be used. However, it still needs expensive equipments.…”

Section: Introductionmentioning

confidence: 99%