B
Bunsen Fan
Researcher at IBM
Publications - 13
Citations - 384
Bunsen Fan is an academic researcher from IBM. The author has contributed to research in topics: Waveguide (optics) & Signal. The author has an hindex of 8, co-authored 13 publications receiving 383 citations.
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Patent
Laser beam homogenizer
TL;DR: In this article, it was shown that a coherent laser beam having a possibly non-uniform spatial intensity distribution is transformed into an incoherent light beam with substantially uniform spatial intensity by homogenizing the laser beam with a light tunnel (a transparent light passageway having flat internally reflective side surfaces), and that the laser light at the exit of the light tunnel will have a substantially uniform intensity distribution and will be incoherent only when the aspect ratio of the tunnel (length divided by width) equals or exceeds the contangent of the input beam divergence angle.
Patent
Polymeric optical waveguides and methods of forming the same
Bunsen Fan,Donis George Flagello,Jeffrey D. Gelorme,Modest M. Oprysko,Albert Speth,Jeannine M. Trewhella +5 more
TL;DR: In this paper, a method for forming a structure comprising a layer of polymeric material containing epoxy groups having preselected regions of differing degrees of polymerization and differing refractive indices is presented.
Patent
Optical clock system with optical time delay means
TL;DR: In this paper, an optical clock system for high-performance computing systems uses unique methods of clock generation, delay timing, and electrical clock conversion to eliminate clock skew due to passive circuit elements.
Proceedings ArticleDOI
Polymeric Optical Waveguides
Jean M. Hagerhorst-Trewhella,Jeffrey D. Gelorme,Bunsen Fan,Albert Speth,Donis George Flagello,Modest M. Oprysko +5 more
TL;DR: Nishihara et al. as mentioned in this paper used an epoxy material vT hich has been fabricated into ridge waveguides which exhibit low propagation loss (0.3 dB/cm at 1.3 jum), high environmental stability (low sensitivity to moisture), smooth walls (100 nm sidewall roughness), and high temperature stability (275°C).
Patent
Gas purifier for rare-gas fluoride lasers
TL;DR: In this article, a closed-cycle gas scrubbing or purification system is described for noble gas and fluorine mixtures, such as are typically used in rare-gas fluoride (excimer) lasers.