Results 11 to 20 of about 291 (152)
Optics Express, 2022 We present a comparative experimental study of three silicon photonic echelle grating demultiplexers that are integrated with a Mach-Zehnder interferometer (MZI) launch structure. By appropriate choice of the MZI configuration, the temperature induced shift of the demultiplexer channel wavelengths can be suppressed (athermal) or enhanced (super-thermal)
Melati, Daniele +7 more
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Precise Blaze Angle Adjustment of Echelle Grating by Self-Shadowing Rotating Mask
IEEE Photonics Journal, 2018 Angular precision of 0.1° for the blaze angle of echelle gratings is an important technical requirement for spectral instruments with echelle gratings.
Bin Sheng +6 more
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Reflectively Coupled Waveguide Photodetector for High Speed Optical Interconnection
Sensors, 2010 To fully utilize GaAs high drift mobility, techniques to monolithically integrate In0.53Ga0.47As p-i-n photodetectors with GaAs based optical waveguides using total internal reflection coupling are reviewed. Metal coplanar waveguides, deposited on top of
Shih-Hsiang Hsu
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The Planetary Science Journal, 2023 We measured the chemical composition of comet C/2021 A1 (Leonard) using the long-slit echelle grating spectrograph iSHELL/IRTF on 2021 December 20 and on 2022 January 8 and 9.
Sara Faggi +3 more
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Silicon Nitride/Silicon Dioxide Echelle Grating Spectrometer for Operation Near 1.55 μm
IEEE Photonics Journal, 2018 Here we use an electron beam lithography system to pattern an ${\rm{S}}{{\rm{i}}_{3}}{{\rm{N}}_{4}}{\rm{/Si}}{{\rm{O}}_{2}}$ echelle grating using silver as a reflector on the grating grooves.
Shengjie Xie +4 more
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Anomalous absorption in TM polarization light by echelle gratings
Optics Express, 2023 Echelle grating plays an essential role in spectral analysis due to its broadband blaze, high dispersion, and high resolution; however, its absorption properties have received no attention. In this paper, we investigate the effect of parameters including incident wavelength, incident angle, and blaze angle on the absorption properties of the Al echelle
Qian, Zhang +3 more
openaire +2 more sources
IEEE Photonics Journal, 2012 We design a spot-size converter (SSC) on silicon-on-insulator (SOI) platform to interface an integrated optical receiver (IOR) with a single-mode fiber (SMF).
Neil Na, Tao Yin
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Role of the grating profile in Smith-Purcell radiation at high energies
Physical Review Special Topics. Accelerators and Beams, 2005 The passage of a finely focused electron beam near the surface of a periodic metallic grating produces radiation known as Smith-Purcell radiation. This paper presents an analysis of the role of the grating profile in the case of echelle-type gratings ...
J. H. Brownell, G. Doucas
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IEEE Photonics Journal, 2013 We demonstrate an integrated spectrometer-on-a-chip composed of an echelle diffraction grating (EDG) and metal-semiconductor-metal (MSM) waveguide photodetector array based on silicon-on-insulator (SOI).
Xiao Ma, Mingyu Li, Jian-Jun He
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Приборы и методы измерений, 2016 The increase of angular dispersion and slit resolution limit of grating spectrometers by means of variation of grating parameters is limited by its period and allowable order of diffraction. The special solutions (echelle, holographic, immersion gratings)
I. M. Gulis, A. G. Kupreyeu
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