Analyzing return loss deterioration of optical fiber joints with various air-filled gaps over wide wavelength range

Author(s):  
Mitsuru Kihara ◽  
Morikazu Uchino ◽  
Masayuki Ohmachi ◽  
Hisashi Izumita
1995 ◽  
Vol 25 (2) ◽  
pp. 187-190 ◽  
Author(s):  
I V Gol'tser ◽  
M Ya Darsht ◽  
Boris Ya Zel'dovich ◽  
N D Kundikova ◽  
L F Rogacheva

2021 ◽  
Author(s):  
Claire Besancon ◽  
Delphine Néel ◽  
Giancarlo Cerulo ◽  
Dalila Make ◽  
Nicolas I. Vaissiere ◽  
...  

2020 ◽  
Vol 10 (10) ◽  
pp. 2560 ◽  
Author(s):  
Masaya Notomi ◽  
Masato Takiguchi ◽  
Sylvain Sergent ◽  
Guoqiang Zhang ◽  
Hisashi Sumikura

2020 ◽  
Vol 509 ◽  
pp. 144697 ◽  
Author(s):  
Changchang Shi ◽  
Xiaowen Zhou ◽  
Wanqing Li ◽  
Hongmei Guo ◽  
Yanjie Zhao ◽  
...  

1996 ◽  
Vol 171 ◽  
pp. 225-228
Author(s):  
N. Metcalfe ◽  
T. Shanks ◽  
R. Fong ◽  
J. Gardner ◽  
N. Roche

Observers studying the cosmology and evolutionary history of our Universe through the statistical properties of ‘normal’ galaxies have four main tools at their disposal. (1) The number-redshift relation. Although a very powerful diagnostic, spectroscopic surveys are currently limited to B < 24m and significantly incomplete in the range, 23m< B < 24m. (2) Galaxy number-magnitude counts. Although by themselves, they cannot constrain models as tightly as spectroscopy, they can be measured ∼ 4m fainter, where cosmological effects are expected to be significant. (3) Galaxy colours over a wide wavelength range, which provide additional constraints. (4) The dependence of galaxy clustering with magnitude. ω(θ) can be measured to the limit of the counts.Here we report on the latest Durham count and clustering work.


2020 ◽  
Vol 142 (9) ◽  
pp. 4206-4212 ◽  
Author(s):  
Jihoon Ahn ◽  
Sunihl Ma ◽  
Ji-Young Kim ◽  
Jihoon Kyhm ◽  
Wooseok Yang ◽  
...  

2011 ◽  
Vol 287-290 ◽  
pp. 364-368 ◽  
Author(s):  
Yuan Li ◽  
Guo Jin Feng ◽  
Li Zhao

The surface microstructured silicon prepared by femtosecond laser pulses irradiation in SF6shows significantly enhanced light absorption over a wide wavelength range. Absorptance of microstructured silicon is measured from 2 to 16μm, and the absorptance can up to 0.8 in the measured wavelength range. The absorptance of microstructured silicon increases as the height of spikes increases. Emissivity of microstructured silicon at different temperatures(100°C-400°C) is measured from 2.5μm to 25μm. Greatly enhanced emissivity compared to that of flat silicon was observed. At a certain temperature, with increasing the height of the spikes, the emissivity increases. For a sample with 13–14μm high spikes, the emissivity at a temperature of 100°C is approximately 0.96. A tentative explanation for the high absorptance of microstructured silicon has been carried out from three aspects: impurity states, structure defects and multiple reflection of light between spikes. The excellent properties of microstructured silicon make it a promising candidate for applications of infrared detectors, silicon solar cells, flat blackbody source and so on.


2014 ◽  
Vol 32 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Wataru Kobayashi ◽  
Takeshi Fujisawa ◽  
Ken Tsuzuki ◽  
Yoshitaka Ohiso ◽  
Toshio Ito ◽  
...  

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