Holey fibers for low bend loss

Abstract

Bending-loss insensitive fiber (BIF) has proved an essential medium for constructing the current fiber to the home (FTTH) network. By contrast, the progress that has been made on holey fiber (HF) technologies provides us with novel possibilities including non-telecom applications. In this paper, we review recent progress on hole-assisted type BIF. A simple design consideration is overviewed. We then describe some of the properties of HAF including its mechanical reliability. Finally, we introduce some applications of HAF including to high power transmission. We show that HAF with a low bending loss has the potential for use in various future optical technologies as well as in the optical communication network.

Direct Bonding using a-Si:H Thin Films for the Fabrication of Chalcopyrite Tandem Solar Cells

“…1 (b) shows the picture of bonded two thin films on the glass substrates. There was no fringe pattern unlike in the case of AZO bonding [6], and it showed the all part of thin films was bonded completely.…”

“…In previous our work [6], we proposed surface activated bonding for fabrication of chalcopyrite tandem solar cells. As a material used for bonding, it is desirable to use ZnO:Al (AZO), since AZO is the most major transparent conductive oxide for CIGS solar cells.…”

Toward Arbitrary‐Direction Energy Harvesting through Flexible Piezoelectric Nanogenerators Using Perovskite PbTiO3 Nanotube Arrays

“…The magnitude of output voltages obtained from the negative and positive strains is similar, but the signs of the peaks measured were reversed, which originated from the negative and positive concavity from different bending modes corresponding tensile strain (ε > 0) and compressive strain (ε < 0), respectively. Calculation of neutral mechanical plane and strains when the device is in different bending modes are shown in the Supporting Information (Figure S10 and Table S1, Supporting Information) . Figure h shows the graph on the output voltage by applying bi‐strain which suggests that the generated output voltages were similar, which contrasts the typical film‐type NG results from previous reports that show voltage generation in only one direction .…”

Fabry–Perot interference temperature sensor integrated high-power-laser optical fiber probe for laser ablation

“…1. It comprises a DCF (9/105/125 μm core/1st cladding/2nd cladding diameter, Coherent Inc.) as the optical input and output, holey fiber (HF, 39) Fujikura Ltd.) and single-mode fiber (SMF-28, Corning Inc.) with an angled fiber end. All fibers were fusion spliced using a Fujikura arc fusion splicer (FSM-100).…”