Maximum channel density in multimode optical waveguides for parallel interconnections

Ishiguro, Takaaki Ishigure Ryota; Uno, Hisashi; Hsu, Hsiang-Han

doi:10.1109/ectc.2011.5898766

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…We already showed the potential of low interchannel crosstalk in GI-core waveguides even under a narrow pitch, which is due to the strong light confinement near the core center [6]. Actually, we simulated how we could decrease the interchannel pitch while keeping the interchannel crosstalk lower than 20 dB for GI cores and then we theoretically confirmed that GI-core waveguides would be suitable for high-density optical wirings [10].…”

Section: Interchannel Crosstalkmentioning

confidence: 61%

“…The lower crosstalk in the GI-circular cores than the square counterparts could be attributed to the thick cladding: low optical power confined in the thick cladding could decrease the crosstalk. We already discussed the optical power in the cladding and showed that optical power removal from the cladding is effective for decreasing the interchannel crosstalk [10,11]. Therefore, the effect of the cladding thickness on the crosstalk will be reported elsewhere.…”

Section: Interchannel Crosstalkmentioning

confidence: 91%

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Accurate interchannel pitch control in graded-index circular-core polymer parallel optical waveguide using the Mosquito method

Kinoshita¹,

Suganuma²,

Ishigure³

2014

Opt. Express

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We successfully fabricate polymer optical waveguides with graded-index (GI) circular cores whose diameter and interchannel pitch are accurately controlled using the Mosquito method: GI-core waveguides with 250-, 125- and 62.5-μm pitches are successfully obtained. The Mosquito method utilizing a microdispenser is a very simple technique for fabricating GI-circular-core polymer optical waveguides. The accurately controlled pitch is confirmed by a high connectivity with a commercially available multimode fiber (MMF) ribbon with a 125-μm pitch. Furthermore, by inserting the waveguide between two 12-channel MMF ribbons, we experimentally demonstrate 11.3 Gbps × 12 Ch. parallel signal transmission through a GI-core waveguide with a 125-μm pitch for the first time to the best of our knowledge.

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Section: Interchannel Crosstalkmentioning

confidence: 61%

Section: Interchannel Crosstalkmentioning

confidence: 91%

Accurate interchannel pitch control in graded-index circular-core polymer parallel optical waveguide using the Mosquito method

Kinoshita¹,

Suganuma²,

Ishigure³

2014

Opt. Express

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“…The assembly structure and its fabrication processes must be low-loss for high-bandwidth data transmission between O/E conversions devices via optical waveguides. Although inter-channel crosstalk is bandwidth-independent in optics, inter-channel crosstalk owing to leaked signals from other channels and optical sources are taken into consideration depending on waveguides pitch, the assembly structure, and the assembling process [17,18]. In particular, optical coupling structures around micro-mirror have implication for optical losses and inter-channel crosstalk in the O/E module.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of high-bandwidth data transmission above 240 Gbps for optoelectronic module with low-loss and low-crosstalk polynorbornene waveguides

Ito

Terada

Singh

et al. 2012

2012 IEEE 62nd Electronic Components and Technology Conference

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We developed a novel flexible optoelectronic (O/E) transceiver module designed for high-bandwidth and low loss data transmission for board level interconnects. In the O/E module, integrated circuits (ICs) and two 12 channel O/E devices including 850 nm vertical-cavity surface-emitting laser diodes (VCSELs) and photodiodes (PDs) were flip-chip assembled on flexible printed circuit (FPC). O/E modules and a sheet of 24-channel polynorbornene (PNB) waveguides were fabricated separately by using cost-effective and standard packaging processes. At the end of the O/E module fabrication process, the PNB waveguide sheet was integrated on completed FPCs with ICs and O/E devices using bonding sheets. Micro-mirrors formed in PNB waveguides were passively aligned toward the corresponding active areas of O/E devices respectively. The PNB waveguide sheet (120 mm long) was bi-directionally linked between O/E modules. We successfully demonstrated data transmission up to 16 Gbps/channel using an optical linked O/E transceiver module with low-loss and low-crosstalk PNB waveguides.

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“…This application takes advantage of their excellent heat resistance in both sulfide-based and oxide-based batteries. [16][17][18][19][20][21] Solid-state batteries that use solid-state polymer electrolytes rather than inorganic materials are also well known. Many of them have remarkably low ionic conductivity, 22) and their transference number of lithium ions is only about 0.1 compared to 1 for inorganic materials.…”

Section: Introductionmentioning

confidence: 99%

Plantar pressure-measuring device powered by flexible all-solid-state battery

Suzuki

Shibata

Nakajima

et al. 2023

Jpn. J. Appl. Phys.

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Flexible or stretchable devices have been attracting attention because of the increase in popularity of internet-of-things devices and wearables. Because lithium-ion secondary batteries have rigid bulk shapes and therefore affect bodily motion, their use in such devices is problematic. Demand for plantar pressure-measuring devices has increased because impairment of ambulation leads not only to accidental falls by elderly people but also to arthritic disorders such as backaches induced by hallux valgus, calluses, and ingrown nails. Because the design of such a small, lightweight device with a medium-capacity lithium-ion battery is impossible, the collection of sufficient data has been impossible. We designed a novel all-solid-state battery produced with a solid-state electrolyte. The battery discharged even when folded, cut, or pushed. This 440 mAh battery could be used to improve overall usability of a prototype of an insole device that would consist of pressure sensors, a wireless communication device, and the battery.

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Maximum channel density in multimode optical waveguides for parallel interconnections

Cited by 7 publications

References 8 publications

Accurate interchannel pitch control in graded-index circular-core polymer parallel optical waveguide using the Mosquito method

Accurate interchannel pitch control in graded-index circular-core polymer parallel optical waveguide using the Mosquito method

Demonstration of high-bandwidth data transmission above 240 Gbps for optoelectronic module with low-loss and low-crosstalk polynorbornene waveguides

Plantar pressure-measuring device powered by flexible all-solid-state battery

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