Zobrazeno 1 - 10 of 110 pro vyhledávání: '"Wing-Han Wong"'
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Efficient Optical Amplification in Erbium-doped Lithium Niobate on Insulator Waveguides
Autor: Zhaoxi Chen, Cheng Wang, De-Long Zhang, Qing Xu, Edwin Yue-Bun Pun, Wing-Han Wong, Ke Zhang
Publikováno v: 26th Optoelectronics and Communications Conference.
We demonstrate efficient waveguide amplifiers based on erbium-doped lithium niobate on insulator with optical net gain of > 5 dB in a compact 5-mm-long waveguide at 1531.6 nm signal wavelength.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa4acfec2013aa1f4fabdecce27e3e83
https://doi.org/10.1364/oecc.2021.t2d.3
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6
Multiple ratiometric thermometry using electronic transitions between Stark sublevels of Er3+ for reliable temperature detection
Autor: Zi-Bo Zhang, Xiao-Fei Yang, Da-Yu Liu, De-Long Zhang, Wing-Han Wong, Edwin Yue-Bun Pun, Rui-Qi Piao, Ning Yuan
Publikováno v: Journal of Alloys and Compounds. 756:208-211
Under 980 nm wavelength excitation, green upconversion emission spectra of Er3+ ions in NaYF4 (NYF) micro-crystals were measured in the temperature range of 298–383 K. A multiple ratiometric thermometry is proposed to realize reliable temperature s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e7d855e850be3f3d6d1a7fba3ff99a7f
https://doi.org/10.1016/j.jallcom.2018.05.011
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8
Amplification combination of Er3+ and Tm3+ emissions in titanium-diffused lithium niobate strip waveguide
Autor: Chao-Yang Zhang, De-Long Zhang, Wen-Bao Sun, Edwin Yue-Bun Pun, Zi-Bo Zhang, Wing-Han Wong, Yun Zhang
Publikováno v: Journal of Luminescence. 198:457-463
Erbium(Er)/thulium(Tm)-codoped active lithium niobate(LiNbO3) channel waveguides were fabricated by titanium diffusion following erbium/thulium co-diffusion doping in an X-/Z-cut LiNbO3 substrate with an initial congruent/Li-deficient composition. We
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6754406b5987cc58510901dd3bed4935
https://doi.org/10.1016/j.jlumin.2018.02.056
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9
Refractive index profile in titanium-diffused congruent lithium tantalate optical waveguide
Autor: Wing-Han Wong, Edwin Yue-Bun Pun, De-Long Zhang, Chao-Yang Zhang, Xiao-Fei Yang, Zi-Bo Zhang
Publikováno v: Materials Letters. 217:181-184
Titanium-diffused lithium tantalate (Ti:LT) multimode planar waveguide was produced by in-diffusion of titanium thin-film deposited onto a Z-cut congruent LT substrate. Titanium concentration (CTi) in the titanium-diffused layer was profiled by secon
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29d0db8fbd9c63ff6bdb265353a37722
https://doi.org/10.1016/j.matlet.2018.01.043
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10
Crystalline phase, Ga3+ concentration profile, and optical properties of Ga3+-diffused lithium tantalate waveguide
Autor: Dao-Yin Yu, Zi-Bo Zhang, Xiao-Fei Yang, Shuai Ren, Wing-Han Wong, De-Long Zhang, Edwin Yue-Bun Pun
Publikováno v: Materials Letters. 213:79-83
Ga3+-diffused lithium tantalate (LiTaO3) strip optical waveguide was fabricated by diffusion (at 950 °C for 1.5 h) of 8-μm wide, 112-nm thick Ga2O3-strips photolithographically patterned onto a Z-cut congruent LiTaO3 substrate. Crystalline phase, c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d071f35b9931d001c865371fdf34ecef
https://doi.org/10.1016/j.matlet.2017.10.122
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