All-optical modulator for gated range finding and active imaging in LWIR

2020 ◽  
Author(s):  
Jack Collins ◽  
Rihan Wu ◽  
Alan Davie ◽  
Andrey Kaplan
Keyword(s):  
Optical Modulator ◽  
Range Finding ◽  
All Optical ◽  
Active Imaging

Design and Simulation of a Fast All-Optical Modulator Based on Photonic Crystal Using Ring Resonators

Silicon ◽  
2021 ◽  
Author(s):  
Mohammad Moradi ◽  
Masoud Mohammadi ◽  
Saeed Olyaee ◽  
Mahmood Seifouri
Keyword(s):  
Photonic Crystal ◽  
Ring Resonators ◽  
Optical Modulator ◽  
All Optical

All-optical modulator based on reduced graphene oxide coated D-shaped fiber waveguide

2019 ◽  
Vol 12 (11) ◽  
pp. 112002
Author(s):  
Jing Han ◽  
Mei Qi ◽  
Hao Wu ◽  
Ruiduo Wang ◽  
Duidui Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Optical Modulator ◽  
Reduced Graphene ◽  
Fiber Waveguide ◽  
All Optical

Ultrafast all-optical modulator for 1.5 μm controlled by Ti:Al2O3 laser

2010 ◽  
Vol 97 (7) ◽  
pp. 073113 ◽  
Author(s):  
M. V. Ermolenko ◽  
O. V. Buganov ◽  
S. A. Tikhomirov ◽  
V. V. Stankevich ◽  
S. V. Gaponenko ◽  
...  
Keyword(s):  
Optical Modulator ◽  
All Optical

scholarly journals Low Insertion Loss Plasmon-Enhanced Graphene All-Optical Modulator

ACS Omega ◽  
2021 ◽  
Vol 6 (11) ◽  
pp. 7576-7584
Author(s):  
Mohammed AlAloul ◽  
Mahmoud Rasras
Keyword(s):  
Insertion Loss ◽  
Optical Modulator ◽  
All Optical ◽  
Low Insertion Loss

scholarly journals All-optical modulation based on MoS2-Plasmonic nanoslit hybrid structures

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Feiying Sun ◽  
Changbin Nie ◽  
Xingzhan Wei ◽  
Hu Mao ◽  
Yupeng Zhang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Single Layer ◽  
Complementary Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Optical Modulator ◽  
Small Scale ◽  
Light Modulation ◽  
Optical Modulators ◽  
Signal Light ◽  
All Optical

Abstract Two-dimensional (2D) materials with excellent optical properties and complementary metal-oxide-semiconductor (CMOS) compatibility have promising application prospects for developing highly efficient, small-scale all-optical modulators. However, due to the weak nonlinear light-material interaction, high power density and large contact area are usually required, resulting in low light modulation efficiency. In addition, the use of such large-band-gap materials limits the modulation wavelength. In this study, we propose an all-optical modulator integrated Si waveguide and single-layer MoS2 with a plasmonic nanoslit, wherein modulation and signal light beams are converted into plasmon through nanoslit confinement and together are strongly coupled to 2D MoS2. This enables MoS2 to absorb signal light with photon energies less than the bandgap, thereby achieving high-efficiency amplitude modulation at 1550 nm. As a result, the modulation efficiency of the device is up to 0.41 dB μm−1, and the effective size is only 9.7 µm. Compared with other 2D material-based all-optical modulators, this fabricated device exhibits excellent light modulation efficiency with a micron-level size, which is potential in small-scale optical modulators and chip-integration applications. Moreover, the MoS2-plasmonic nanoslit modulator also provides an opportunity for TMDs in the application of infrared optoelectronics.

MgO Doped Lithium Niobate Waveguides Based All Optical Modulator

2018 ◽  
pp. 177-181
Author(s):  
Sanjay Kumar ◽  
Ghanshyam Singh ◽  
Vijay Janyani ◽  
Oleh Buryy ◽  
Ubizskii Serhij ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Optical Modulator ◽  
All Optical

Concave Rectangle Photonic Crystal Ring Resonator for Ultra-Fast All-Optical Modulation

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Sana Rebhi ◽  
Radhouene Massoudi ◽  
Monia Najjar
Keyword(s):  
Photonic Crystal ◽  
Insertion Loss ◽  
Ring Resonator ◽  
Extinction Ratio ◽  
Input Power ◽  
Light Signal ◽  
Optical Modulator ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Photonic Crystal Ring Resonator

AbstractIn this paper, an ultra-fast all-optical modulator, based on a new shape of nonlinear photonic crystal ring resonator, is designed and studied. Numerical methods such as plane wave expansion (PWE) and finite-difference time domain (FDTD) are used to perform simulations. The modulation technique consists of carrier light controlling by means of input light signal and Kerr effect. The investigation of extinction ratio and insertion loss within the carrier input power shows that the choice of 0.7 W is the optimal value of that power to ensure the tradeoff between both characteristics. The suggested modulator demonstrates an excellent extinction ratio about 20.8018, a very low insertion loss of −13.98 and a short switching time about 13.4 ps. According to the obtained results, the modulator can be considered as an ultra-fast and ultra-compact optical component.

Observation of bifurcation to chaos in a passive all-optical Fabry-Perot resonator: a high-frequency optical modulator

1984 ◽  
Vol 313 (1525) ◽  
pp. 405-409
Keyword(s):  
Excellent Agreement ◽  
High Frequency ◽  
Optical Bistability ◽  
Time Dependent ◽  
Optical Modulator ◽  
Round Trip Time ◽  
Round Trip ◽  
Trip Time ◽  
Fabry Perot ◽  
All Optical

We report the first observations of bifurcation routes to chaos in an all-optical resonator. Generation of associated deep and sustained Ikeda oscillation of the smooth CO 2 laser input pulses at twice the round-trip time of the Fabry-Perot resonator provides a high-frequency ( ca .0.1 GHz) passive optical modulator device. Results are in excellent agreement with our adaption of optical bistability theory to the time-dependent regime

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