16-channel flexible optical passband filter array for CDCF ROADM

2019 ◽  
Vol 450 ◽  
pp. 61-66
Author(s):  
Zhilin Yuan ◽  
Wei Li ◽  
Rui Yang ◽  
Liu Yang ◽  
Fan Wang ◽  
...  
Keyword(s):  
Passband Filter ◽  
Filter Array

scholarly journals Design of mid-infrared filter array based on plasmonic metal nanodiscs array and its application to on-chip spectrometer

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hwa-Seub Lee ◽  
Gyu-Weon Hwang ◽  
Tae-Yeon Seong ◽  
Jongkil Park ◽  
Jae Wook Kim ◽  
...  
Keyword(s):  
Nanoimprint Lithography ◽  
Filter Design ◽  
Reconstruction Technique ◽  
Filter Function ◽  
Promising Alternative ◽  
Mid Infrared ◽  
Spectrum Reconstruction ◽  
Filter Array ◽  
On Chip ◽  
Multispectral Filter Array

AbstractMid-infrared wavelengths are called the molecular fingerprint region because it contains the fundamental vibrational modes inherent to the substances of interest. Since the mid-infrared spectrum can provide non-destructive identification and quantitative analysis of unknown substances, miniaturized mid-infrared spectrometers for on-site diagnosis have attained great concern. Filter-array based on-chip spectrometer has been regarded as a promising alternative. In this study, we explore a way of applying a pillar-type plasmonic nanodiscs array, which is advantageous not only for excellent tunability of resonance wavelength but also for 2-dimensional integration through a single layer process, to the multispectral filter array for the on-chip spectrometer. We theoretically and experimentally investigated the optical properties of multi-periodic triangular lattices of metal nanodiscs array that act as stopband filters in the mid-infrared region. Soft-mold reverse nanoimprint lithography with a subsequent lift-off process was employed to fabricate the multispectral filter array and its filter function was successfully extracted using a Fourier transform infrared microscope. With the measured filter function, we tested the feasibility of target spectrum reconstruction using a Tikhonov regularization method for an ill-posed linear problem and evaluated its applicability to the infrared spectroscopic sensor that monitors an oil condition. These results not only verify that the multispectral filter array composed of stopband filters based on the metal nanodiscs array when combined with the spectrum reconstruction technique, has great potential for use to a miniaturized mid-infrared on-chip spectrometer, but also provide effective guidance for the filter design.

Toward blind joint demosaicing and denoising of raw color filter array data

2021 ◽  
Author(s):  
Fangfang Wu ◽  
Tao Huang ◽  
Weisheng Dong ◽  
Guangming Shi ◽  
Zhonglong Zheng ◽  
...  
Keyword(s):  
Color Filter ◽  
Color Filter Array ◽  
Array Data ◽  
Filter Array

scholarly journals Plasmonic Mid-Infrared Filter Array-Detector Array Chemical Classifier Based on Machine Learning

ACS Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 648-657
Author(s):  
Jiajun Meng ◽  
Jasper J. Cadusch ◽  
Kenneth B. Crozier
Keyword(s):  
Machine Learning ◽  
Detector Array ◽  
Array Detector ◽  
Mid Infrared ◽  
Filter Array

scholarly journals Adaptive Wiener filter super-resolution of color filter array images

2013 ◽  
Vol 21 (16) ◽  
pp. 18820 ◽  
Author(s):  
Barry K. Karch ◽  
Russell C. Hardie
Keyword(s):  
Wiener Filter ◽  
Super Resolution ◽  
Color Filter ◽  
Color Filter Array ◽  
Filter Array
Sign in / Sign up

Export Citation Format

Share Document