Highly selective FSK receiver for a high channel capacity WDM system using a fiber Fabry Perot or a 2-electrode DFB-LD as the optical filter

2002 ◽  
Author(s):  
M.J. Chawki ◽  
V. Tholey ◽  
E. Gay ◽  
R. Auffret ◽  
L. Berthou
Keyword(s):  
Channel Capacity ◽  
Optical Filter ◽  
Fabry Perot

scholarly journals Analysis of Dielectric Waveguide Grating and Fabry–Perot Modes in Elastic Grating in Optical Detection of Ultrasound

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4081
Author(s):  
Suejit Pechprasarn ◽  
Chayanisa Sukkasem ◽  
Phitsini Suvarnaphaet
Keyword(s):  
Optical Properties ◽  
Dielectric Waveguide ◽  
Figure Of Merit ◽  
Pressure Range ◽  
Optical Filter ◽  
Grating Period ◽  
Wave Mode ◽  
Waveguide Grating ◽  
Fabry Perot ◽  
Optical Grating

In our previous work, we have demonstrated that dielectric elastic grating can support Fabry–Perot modes and provide embedded optical interferometry to measure ultrasonic pressure. The Fabry–Perot modes inside the grating provide an enhancement in sensitivity and figure of merit compared to thin film-based Fabry–Perot structures. Here, in this paper, we propose a theoretical framework to explain that the elastic grating also supports dielectric waveguide grating mode, in which optical grating parameters control the excitation of the two modes. The optical properties of the two modes, including coupling conditions and loss mechanisms, are discussed. The proposed grating has the grating period in micron scale, which is shorter than the wavelength of the incident ultrasound leading to an ultrasonic scattering. The gap regions in the grating allow the elastic grating thickness to be compressed by the incident ultrasound and coupled to a surface acoustic wave mode. The thickness compression can be measured using an embedded interferometer through one of the optical guided modes. The dielectric waveguide grating is a narrow bandpass optical filter enabling an ultrasensitive mode to sense changes in optical displacement. This enhancement in mechanical and optical properties gives rise to a broader detectable pressure range and figure of merit in ultrasonic detection; the detectable pressure range and figure of merit can be enhanced by 2.7 times and 23 times, respectively, compared to conventional Fabry–Perot structures.

Electrically tunable optical filter for infrared wavelength using liquid crystals in a Fabry–Perot étalon

1990 ◽  
Vol 57 (17) ◽  
pp. 1718-1720 ◽  
Author(s):  
J. S. Patel ◽  
M. A. Saifi ◽  
D. W. Berreman ◽  
Chinlon Lin ◽  
N. Andreadakis ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Optical Filter ◽  
Infrared Wavelength ◽  
Tunable Optical Filter ◽  
Fabry Perot

Investigation of a Fabry-Perot-based optical filter for broadband multichannel communication systems

2009 ◽  
Author(s):  
Jinrong Zhang ◽  
Yubin Guo ◽  
Jiayu Huo ◽  
Gang Wang ◽  
Shuming Zhang
Keyword(s):  
Communication Systems ◽  
Optical Filter ◽  
Fabry Perot

Quasi-periodic photonic crystal Fabry–Perot optical filter based on Si/SiO2 for visible-laser spectral selectivity

2018 ◽  
Vol 51 (22) ◽  
pp. 225103 ◽  
Author(s):  
Dong Qi ◽  
Xian Wang ◽  
Yongzhi Cheng ◽  
Fu Chen ◽  
Lei Liu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Filter ◽  
Spectral Selectivity ◽  
Fabry Perot ◽  
Visible Laser

scholarly journals Thermo-Optic Tunable Optical Filter Based on Fabry-Perot Microcavities in SOI

2012 ◽  
Vol 6-7 ◽  
pp. 194-199
Author(s):  
Zhe Li ◽  
Hua Juan Qi ◽  
Yong Chuan Xiao ◽  
Feng Li Gao
Keyword(s):  
Refractive Index ◽  
Wavelength Division Multiplexing ◽  
Optical Filter ◽  
Silicon On Insulator ◽  
Central Wavelength ◽  
Wavelength Division ◽  
Tunable Optical Filter ◽  
Compact Size ◽  
Fabry Perot ◽  
Output Characteristics

An integrated TOF (Tunable Optical Filter) based on thermo-optic effect in Silicon on insulator (SOI) rib waveguide is designed and simulated. The device is comprised of two high refractivity contrast Si/Air stacks, functioning as high reflectivity of DBRs and separated by a variable refractive index Si F-P cavity. The output characteristics are calculated and simulated based on Transfer Matrix Method (TMM). Wavelength tuning is achieved through thermal modulation of refractive variation of the cavity.As the cavity Si is heated,the refractive index of the cavity increases.When the temperature of cavity Si changes within100°C，the central wavelength gets a continuous 8nm shift from 1550nm to 1558nm, which is right located in the WDM (Wavelength division multiplexing) networks operating at C-band. Moreover, by calculating, the tuning sensitivity is about 0.08nm/°C. Owing to the compact size and excellent characteristics of integration, the proposed component has a promising utilization in spectroscopy and optical communication.

scholarly journals Fabry-Pérot optical filter assembly: a candidate for the Mie/ Rayleigh separator in EarthCARE

2009 ◽  
Vol 17 (5) ◽  
pp. 3476 ◽  
Author(s):  
M. J. Foster ◽  
R. Bond ◽  
J. Storey ◽  
C. Thwaite ◽  
J. Y. Labandibar ◽  
...  
Keyword(s):  
Optical Filter ◽  
Fabry Perot

A narrow-band optical filter based on Fabry — Perot interferometer with one waveguide — grating mirror

2003 ◽  
Vol 33 (8) ◽  
pp. 695-698 ◽  
Author(s):  
B A Usievich ◽  
V A Sychugov ◽  
O Parriaux ◽  
J Kh Nurligareev
Keyword(s):  
Narrow Band ◽  
Optical Filter ◽  
Waveguide Grating ◽  
Fabry Perot
Sign in / Sign up

Export Citation Format

Share Document