The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We investigate theoretically and experimentally the factors to influence on the core height when the Mosquito method is applied. Using the simulation analysis, we find a correction method to align the core height accurately.
In this paper, we focus on the coupling loss of polymer waveguide based optical links, which exhibits a serious impact on the power budget in such a short-reach link. In particular, the optimum core size of polymer waveguides for the low coupling loss with VCSELs and PDs with small effective area is investigated both theoretically and experimentally.
Polymer waveguides incorporated with europium (Eu)-aluminum (Al) polymer composite are fabricated by applying the Mosquito method. The optical amplification gains of the fabricated waveguides with different lengths are measured under a coaxial pumping condition. It is found that the pumping efficiency tends to decrease with increasing the waveguide length. In order to improve the efficiency, the core...
This paper represents 3-dimensional crossing structures of multimode polymer optical waveguide with graded-index (GI) circular cores for optical printed circuit boards (OPCBs), which are fabricated using the Mosquito Method. In this waveguide, the cores are aligned with a 250-pm inter-channel pitch containing both horizontally and vertically bent structures, where the last 6 channels are crossing...
To realize free optical wiring patterns on printed circuit boards (PCBs), polymer shuffling optical waveguides are fabricated, in which both crossing and curved core structures are combined. The obtained GI polymer shuffling waveguides show low insertion loss independent of the crossing angle and core size. The GI-core polymer shuffling waveguide is a key device for low loss and high density on-board...
We fabricate 3-dimensional shuffling structure in multimode polymer waveguide with graded-index (GI) circular core for optical printed circuit board (OPCB) using the Mosquito method. The waveguide aligned with a 250-μm inter-channel pitch contains vertically bent structures to achieve greater wiring density for on-board optical interconnects.
We fabricate polymer waveguides incorporated with europium-aluminum (Eu-Al) polymer composite with a simple procedure named the Mosquito method utilizing a micro-dispenser. Under a coaxial excitation condition, an optical gain as high as 15.7 dB is observed at 616-nm wavelength for a 4.9-cm long waveguide. Furthermore, the fabricated waveguides with different lengths exhibit higher gains as their...
By applying the Mosquito method, we fabricate tapered polymer waveguides for spot size converters (SSCs) enabling low-loss coupling between Si waveguides and standard single mode fibers. The fabricated SSC exhibits remarkably low insertion loss as 2.77 dB.
In this paper, we demonstrate that low insertion loss is achieved in channel-shuffling polymer waveguide having graded-index (GI) square cores (24 channels × 24 channels) with a 125-mm interchannel pitch. Although there are several fabrication methods for GI-core polymer optical waveguides proposed, the index profiles formed in the square cores are not ideally symmetric, when conventional photo-lithography...
In this paper, we present axially tapered circular core polymer optical waveguides which allow high-efficiency light coupling between optical components such as light sources, fibers/waveguides, and detectors with a wide misalignment tolerance. We experimentally fabricate the taper shaped polymer waveguides by applying imprinting method or the Mosquito method, and both experimentally and theoretically...
In this paper, we present low-loss channel-shuffling multimode polymer optical waveguides achieved by forming graded-index (GI) square cores (24 channels × 24 channels) under a 125-um interchannel pitch. We utilize the imprint method for fabricating the GI square core polymer waveguides with ideally symmetric index profile. First, the channel-shuffling structure to exhibit low insertion loss is designed,...
In this paper, we report parallel high-speed (28-Gbps per channel) error free (BER < 10−12) data transmission over a 26-cm long graded-index polymer optical waveguide. The effect of modal dispersion and inter-channel crosstalk are investigated by analyzing the bath-tub curve and eye-diagram.
Multimode polymer optical waveguides with graded index perfect circular cores are fabricated using the Mosquito method. We both theoretically and experimentally confirm that monomer-flow caused by the monomer dispense with needle scan influences the core shape. In addition, we fabricate a waveguide with perfect circular cores showing 1.73-dB lower insertion loss compared to the waveguide with the...
Tapered polymer optical waveguides with graded-index (GI) circular core are designed and fabricated using the Mosquito method. We show an ideal index profile design for the tapered polymer waveguide allowing a low-loss optical coupling between a VCSEL source and a multimode fiber/waveguide with a large misalignment tolerance.
We fabricate narrow-pitch single-mode (SM) polymer optical waveguides compatible with Si photonics chips by means of a simple process named the Mosquito method. The inter-channel pitch could be 30 μm and less, while sufficiently low crosstalk (<-30 dB) is achieved by the 30¼m pitch SM waveguide at 1550-nm wavelength.
In this paper, microchannels with circular cross-sections are fabricated using the Mosquito method in order to mimic micro vascular networks. We experimentally confirm that microchannels with a straight line are fabricated when dimethyl siloxane monomer is cured at 45 °C. The diameter of the fabricated microchannels is varied from 54 pm to 581 μm with a circularity higher than 0.98 at any sizes of...
We investigate a pitch conversion structure in polymer optical waveguide to connect with narrow pitch optical components, and improve the coupling efficiency with an MMF ribbon using a high viscosity cladding monomer.
We present a crossing structure in polymer optical waveguides for high-density interconnects on printed circuit boards (PCBs). We have already proposed a fabrication technique for forming graded-index (GI) circular cores in polymer optical waveguides, named the Mosquito method. In this paper, 3D wiring of the core is focused to achieve crossing structures inside waveguides using the Mosquito method,...
We fabricate a very short-reach graded-index (GI) core tapered polymer optical waveguide utilizing an imprint method, in which the refractive index profile is accurately controlled. The optical loss of step-index(SI) and GI tapered waveguides are both theoretically and experimentally compared. We also experimentally demonstrate that GI-core exhibits lower loss than SI-core.
The soft-lithography method is applied to an organic-inorganic hybrid resin for fabricating low-loss and thermally stable (solder-reflow capable) graded-index polymer optical waveguides. By adjusting the UV exposure condition, the insertion loss is successfully lowered, because a near parabolic index profile is formed in the core.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.