Zobrazeno 1 - 10
of 385
pro vyhledávání: '"Wood-Hi Cheng"'
Autor:
Chien-Wei Huang, Chun-Nien Liu, Sheng-Chuan Mao, Wan-Shao Tsai, Zingway Pei, Charles W. Tu, Wood-Hi Cheng
Publikováno v:
Sensors, Vol 24, Iss 6, p 1897 (2024)
A new scheme presents MEMS-based LiDAR with synchronized dual-laser beams for detection range enhancement and precise point-cloud data without using higher laser power. The novel MEMS-based LiDAR module uses the principal laser light to build point-c
Externí odkaz:
https://doaj.org/article/9577388481084f94b2be421a51bd2919
Autor:
Chun-Nien Liu, Kai-Chieh Chang, Chia-Ling Tsai, Wei-Chih Cheng, Tien-Tsorng Shih, Sheng-Lung Huang, Wood-Hi Cheng
Publikováno v:
IEEE Photonics Journal, Vol 15, Iss 3, Pp 1-6 (2023)
A record net gain of 17-dB has been demonstrated in a 300-nm broadband single-mode Cr-doped crystalline core fiber (CCF) with a 19-μm core diameter and 18-cm fiber length. The gain-per-unit-length of the CCF, which is an impressive 94 dB/m, is signi
Externí odkaz:
https://doaj.org/article/95bb7808efaa4218a1b73c96779515b3
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 3, Pp 1-10 (2021)
High color rendering index (CRI) of 97 and wide correlated-color temperatures (CCTs) range of 2100–7600 K in white light-emitting diodes (WLEDs) employing the two-inch diameter of CaAlSiN3: Eu2+ (red phosphor) and Lu3Al5O12: Ce3+ (green phosphor) c
Externí odkaz:
https://doaj.org/article/5066b49d6d38448e8edc977db15069eb
Autor:
Chun-Nien Liu, Jhuo-Wei Li, Yung-Hsiang Tung, Chun-Chuen Yang, Wei-Chih Cheng, Sheng-Lung Huang, Wood-Hi Cheng
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 2, Pp 1-11 (2020)
Tetrahedral chromium (Cr4+)-ions is the main contributor to gain in the broadband single-mode Cr-doped crystalline core fibers (SCCFs). We have demonstrated a gross gain of 8-dB on a length of 27-cm for a 300-nm broadband SCCF using a thermal anneali
Externí odkaz:
https://doaj.org/article/ad62e797c8534533921c04de9d968802
Publikováno v:
AIP Advances, Vol 12, Iss 1, Pp 015018-015018-6 (2022)
We demonstrate the generation of a laser hotspot by a laser-excited single crystal phosphor (SCP) converter layer in a white LED for producing a wide field of view (FOV) and high enhanced central brightness (ECB) for an adaptive-driving-beam (ADB) he
Externí odkaz:
https://doaj.org/article/b257570257f24ad0ae9588507a968df3
Publikováno v:
International Journal of Automation and Smart Technology, Vol 1, Iss 2, Pp 101-109 (2011)
The measurement of the relative post-weld-shift (PWS) in the butterfly-type laser module packaging processes is very difficult because the components are very small and the space is very compact. In this paper, we develop a low cost system to study t
Externí odkaz:
https://doaj.org/article/de1cf2679aae43088b02f31eeaafbd4f
Publikováno v:
Sensors, Vol 9, Iss 8, Pp 6200-6218 (2009)
A novel plastic packaging of a piezoresistive pressure sensor using a patterned ultra-thick photoresist is experimentally and theoretically investigated. Two pressure sensor packages of the sacrifice-replacement and dam-ring type were used in this st
Externí odkaz:
https://doaj.org/article/dc3342bc097c4572a4d50f09118a94e1
A high reliability and luminance of color wheel in laser light engine (LLE) employing novel phosphor-in-inorganic silicone (PiIS) fabricated at low temperature of 180°C for laser projector applications is presented and demonstrated for the first tim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c4199002e57fe44c0f189868af7026d
https://doi.org/10.1364/opticaopen.22291081
https://doi.org/10.1364/opticaopen.22291081
Autor:
Kai-Chieh Chang, Chia-Ling Tsai, Wei-Chih Cheng, null Zon, Chun-Nien Liu, Tien-Tsorng Shih, Sheng-Lung Huang, Charles W. Tu, Wood-Hi Cheng
Publikováno v:
Optical Fiber Communication Conference (OFC) 2023.
We demonstrate record gain of 18-dB broadband single-mode Cr-doped crystalline core fiber employing small core diameter. The gain-per-unit-length is 90 dB/m, which is higher than currently achieved Er and Bi-doped fibers of 0.6 - 3 dB/m.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaa87796091b59c585203d09bbe2c744
https://doi.org/10.1364/ofc.2023.th3c.4
https://doi.org/10.1364/ofc.2023.th3c.4
Publikováno v:
IEEE Photonics Technology Letters. 33:1143-1146
We demonstrate co-doped phosphor-in-glass (PiG) for high performance white light-emitting diodes (WLEDs) employing reduction of red/green phosphors interaction and antireflection coating (ARC). In this study, the novelties are a suitable selection of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7364f7dd549035656fe18e777840d73e
https://doi.org/10.1109/lpt.2021.3109620
https://doi.org/10.1109/lpt.2021.3109620