Demonstration of a bandwidth-tunable optical passband filter with tunable attenuation

2018 ◽  
Vol 16 (7) ◽  
pp. 070602
Author(s):  
Zhilin Yuan Zhilin Yuan ◽  
Wei Li Wei Li ◽  
Rui Yang Rui Yang ◽  
Liu Yang Liu Yang ◽  
Fan Wang Fan Wang ◽  
...  
Keyword(s):  
Passband Filter

scholarly journals A high-quality narrow passband filter for elastic SV waves via aligned parallel separated thin polymethylmethacrylate plates

AIP Advances ◽  
2017 ◽  
Vol 7 (8) ◽  
pp. 085318 ◽  
Author(s):  
Jun Zhang ◽  
Yaolu Liu ◽  
Wensheng Yan ◽  
Ning Hu
Keyword(s):  
High Quality ◽  
Passband Filter

scholarly journals Assessing the photometric redshift precision of the S-PLUS survey: the Stripe-82 as a test-case

2020 ◽  
Vol 499 (3) ◽  
pp. 3884-3908 ◽  
Author(s):  
A Molino ◽  
M V Costa-Duarte ◽  
L Sampedro ◽  
F R Herpich ◽  
L Sodré ◽  
...  
Keyword(s):  
Simultaneous Detection ◽  
Control Sample ◽  
Emission Lines ◽  
Test Case ◽  
Local Universe ◽  
Photometric Redshift ◽  
Luminosity Functions ◽  
Passband Filter ◽  
Statistical Studies ◽  
Narrow Bands

ABSTRACT In this paper we present a thorough discussion about the photometric redshift (photo-z) performance of the Southern Photometric Local Universe Survey (S-PLUS). This survey combines a seven narrow +5 broad passband filter system, with a typical photometric-depth of r ∼ 21 AB. For this exercise, we utilize the Data Release 1 (DR1), corresponding to 336 deg2 from the Stripe-82 region. We rely on the BPZ2 code to compute our estimates, using a new library of SED models, which includes additional templates for quiescent galaxies. When compared to a spectroscopic redshift control sample of ∼100 k galaxies, we find a precision of σz <0.8 per cent, <2.0 per cent, or <3.0 per cent for galaxies with magnitudes r < 17, <19, and <21, respectively. A precision of 0.6 per cent is attained for galaxies with the highest Odds values. These estimates have a negligible bias and a fraction of catastrophic outliers inferior to 1 per cent. We identify a redshift window (i.e. 0.26 < z < 0.32) where our estimates double their precision, due to the simultaneous detection of two emission lines in two distinct narrow bands; representing a window opportunity to conduct statistical studies such as luminosity functions. We forecast a total of ∼2 M, ∼16 M and ∼32 M galaxies in the S-PLUS survey with a photo-z precision of σz <1.0 per cent, <2.0 per cent, and <2.5 per cent after observing 8000 deg2. We also derive redshift probability density functions, proving their reliability encoding redshift uncertainties and their potential recovering the n(z) of galaxies at z < 0.4, with an unprecedented precision for a photometric survey in the Southern hemisphere.

A tunable dual-passband filter based on improved ring resonator

2013 ◽  
Vol 27 (17) ◽  
pp. 2239-2246
Author(s):  
Zi Han Wu ◽  
Feng Wei ◽  
Yan Yi Wang ◽  
Xiao Wei Shi
Keyword(s):  
Ring Resonator ◽  
Passband Filter
Sign in / Sign up

Export Citation Format

Share Document