Institution
The Furukawa Electric Co., Ltd.
Company•London, United Kingdom•
About: The Furukawa Electric Co., Ltd. is a company organization based out in London, United Kingdom. It is known for research contribution in the topics: Optical fiber & Layer (electronics). The organization has 3828 authors who have published 4323 publications receiving 43140 citations.
Papers published on a yearly basis
Papers
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05 Nov 1999TL;DR: In this paper, a medical guide wire made of NiTi type alloy, the wire having a high-elasticity property over a wide strain range, superior linearity, and suitable stress-strain curve shapes and properties in tensile tests, was obtained by subjecting a cold-worked NiTi-type alloy wire to mechanical corrective processing under predetermined twisting shearing strain and temperature conditions while applying a predetermined tension.
Abstract: A medical guide wire made of NiTi type alloy, the wire having a high-elasticity property over a wide strain range, superior linearity, and suitable stress-strain curve shapes and properties in tensile tests. The wire is obtained by subjecting a cold-worked NiTi type alloy wire to mechanical corrective processing under predetermined twisting shearing strain and temperature conditions while applying a predetermined tension thereto, and since the wire exerts superior pushability, torque transmittability and repetitive insertability for medical guide wires, it is suitable for use as a catheter guide wire, an endoscope guide wire or the like.
278 citations
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22 Jun 2001TL;DR: In this article, the authors proposed a Raman amplifier with a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and the pumping lights outputted from the pumping means have different central wavelengths.
Abstract: A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source.
261 citations
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15 Aug 2001-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, single crystal elastic constants of Ti-Ni alloys without (quenched) and with (aged) Ti 3 Ni 4 precipitates were measured systematically by a rectangular parallelepiped resonance method as a function of composition and temperature, in an attempt to answer some long-standing questions as to the origin of the unique monoclinic B19′ martensite.
Abstract: Single crystal elastic constants of Ti–Ni alloys without (quenched) and with (aged) Ti 3 Ni 4 precipitates were measured systematically by rectangular parallelepiped resonance method as a function of composition and temperature, and compared with Ti–Ni–Cu and Ti–Ni–Fe alloys, in an attempt to answer some long-standing questions as to the origin of the unique monoclinic B19′ martensite, and why composition and thermomechanical treatment greatly changes the path of martensitic transformation. The results showed that softening in c 44 , in additional to c ′, is a common feature for all Ti–Ni binary (both quenched or aged) and ternary alloys. This general feature just corresponds to the fact that all these alloys ultimately transform into B19′, suggesting that softening in c 44 is responsible for the unique B19′ martensite, which found no analogy in other β phase alloys. We also found an interesting correspondence between the temperature dependence of anisotropy factor and transformation path. Prior to B2–B19′ transformation anisotropy shows a decrease with lowering temperature; prior to B2–B19 an anisotropy increase, while prior to B2–R transformation a constant anisotropy. We further showed that three possible martensite candidates (R, B19, B19′) are rooted in anomalies in specific phonon modes and elastic softening. We showed that the multi-stage transformations are restricted by a general rule: multi-stage transformation occurs in the sequence of increasing transformation strain. With this rule we can explain all known transformation paths by considering the effect of alloying addition and fine precipitates/dislocation network on relative stability of different martensites. We further predict that there may exist a new transformation path in Ti–Ni-based alloys: B2–R–B19–B19′.
252 citations
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TL;DR: In this article, an analysis of the learning, recall and generalization characteristics of neural networks for detecting and diagnosing process failures in steady state processes is presented, where the single fault assumption has been relaxed to include multiple causal origins of the symptoms.
234 citations
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04 Mar 2012TL;DR: A novel free-space coupling system combined with a multi-core fiber enables up-scaling to a record space-division-multiplexed (SDM) channel number of 19 and achieves 305-Tb/s transmission over 10.1 km using 19-SDM, 100-WDM PDM-QPSK signals.
Abstract: A novel free-space coupling system combined with a multi-core fiber enables up-scaling to a record space-division-multiplexed (SDM) channel number of 19. We achieve 305-Tb/s transmission over 10.1 km using 19-SDM, 100-WDM PDM-QPSK signals.
224 citations
Authors
Showing all 3828 results
Name | H-index | Papers | Citations |
---|---|---|---|
Xiao-Ming Chen | 108 | 596 | 42229 |
Ryosuke Kainuma | 70 | 535 | 21312 |
Tatsuaki Okamoto | 62 | 305 | 18600 |
Toshihiko Baba | 58 | 529 | 13500 |
Hiroshi Nagai | 56 | 293 | 9200 |
Toshio Hirai | 45 | 408 | 8116 |
Shinji Yamashita | 40 | 359 | 6082 |
Toshihiro Omori | 40 | 242 | 7531 |
Shu Namiki | 39 | 538 | 6370 |
Ryuji Kohno | 38 | 590 | 8402 |
Satoshi Awaji | 38 | 690 | 7960 |
Takehiro Tsuritani | 36 | 403 | 4233 |
Shiro Sakai | 34 | 235 | 4022 |
Hiroshi c | 34 | 615 | 5420 |
Kaname Matsumoto | 33 | 290 | 4354 |