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Polymeric waveguide wavelength filters using electron-beam direct writing
Applied Physics Letters, 2001Polymeric waveguide wavelength filters based on a low-loss negative tone epoxy Novolak resin polymer have been fabricated using electron-beam direct writing. Both the waveguides and the gratings were exposed simultaneously, which effectively eliminate the alignment errors that can be generated during fabrication. A first-order Bragg grating around 1550
W. H. Wong, E. Y. B. Pun
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Electron beam direct-write tunable polymeric waveguide grating filter
IEEE Photonics Technology Letters, 2003We report a tunable electron beam direct-write polymeric waveguide Bragg grating filter based on a negative tone epoxy, The waveguide filter, with a 5-mm-long first-order grating, exhibits a transmission peak of -27 dB and a 3-dB bandwidth of /spl sim/0.8 nm, and there is an excellent agreement between experimental data and simulation results.
W.H. Wong, E.Y.B. Pun, K.S. Chan
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Applications of microstructures fabricated by proton beam writing to electric-micro filters
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2009Abstract Fabrication of high-aspect-ratio microstructures was performed by proton beam writing (PBW) using a microbeam line at Takasaki Ion Accelerators for Advanced Radiation Application (TIARA), JAEA Takasaki, JAPAN. As one of the applications of the high-aspect-ratio structures micro-machined by PBW, we utilized the high-aspect pillars for ...
Yusuke Furuta +6 more
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Writing a FORTH discompiler and using FORTH in digital filters and multichannel analysis
Microprocessors and Microsystems, 1983Abstract An introduction to the way in which FORTH runs on a microcomputer is given. The colon definition is identified as an essential part of the language and examples of its use are given. A program to discompile noncolon definitions is presented. Two examples of the use of FORTH are given; in digital filtering and multichannel analysis.
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Laser-Beam Periodic-Dot Writing For Fabrication of Ti:LiNbO3 Waveguide Wavelength Filters
Integrated Photonics Research, 1993A new laser beam (LB) writing technique that can provide dot lines of a nearly 10-?m period in photoresist, with a period fluctuation of less than 4 nm, is proposed and demonstrated. The dot period is also controllable with an accuracy of the order of a nanometer.
M, Haruna +3 more
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Writing with Mass-Selected Ions Using a Dynamic Field Wien Filter
Journal of the American Society for Mass SpectrometryWe have designed and constructed a low-cost Wien filter based on strong permanent magnets and integrated it into an ion soft-landing instrument to enable parallel deposition as well as one- and two-dimensional surface patterning of mass-selected ions using dynamic fields. We show the capabilities of this device for separating ions from a multicomponent
Michael F. Espenship, Julia Laskin
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Simultaneous exposure of filter gratings and waveguides by direct write electron-beam lithography
Microelectronic Engineering, 1997Abstract A novel process enabling the simultaneous electron-beam exposure of different types of structures is presented, illustrated by the synchronous generation of filter gratings and waveguides. Optimized results for a precise adjustment of the interface waveguide-grating are shown, as well as the necessity for proximity correction achieved by ...
R. Steingrüber, M. Hamacher
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Direct Laser Writing of Micro–Nano Filters Based on Three-Photon Polymerization
ACS Applied Materials & InterfacesDirect laser writing (DLW) enables the manufacturing of functional quantum dot (QD)-polymer nanostructures with the special performance desired for technological applications. However, most papers fabricate the QD-polymer photoresist based on the principle of two-photon polymerization using laser wavelengths of 750-800 nm, which cannot effectively ...
Jiubin Jue, Zongsong Gan
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Volume holographic wavelength filters based on transmissive-writing and orthogonal-readout scheme
SPIE Proceedings, 2007Owing to the high Bragg selectivity and capacity of multiple recording, volume holography has been widely investigated for devices such as wavelength filters in wavelength-division multiplexing fiber communication systems in recent years. Transmission-Writing and Orthogonal-Readout scheme (TWOR) has been proposed for making wavelength filters in ...
Xiaodan Zheng +3 more
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Adaptive Impedance Control Method for Industrial Manipulator Writing Based on Kalman Filter
2018 37th Chinese Control Conference (CCC), 2018This paper presents an adaptive impedance control method based on Kalman filter to write Chinese characters for industrial manipulator. Kalman filter is used to estimate the actual contact force. For safety, the contact force is controlled to maintain constant using the adaptive impedance control method.
Qidan Zhu +3 more
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