scholarly journals Widely Tunable Resonant Cavity Enhanced Detectors Built Around Photonic Crystals

1999 ◽  
Author(s):  
Ekmel Ozbay ◽  
Burak Temelkuran ◽  
J.P. Kavanaugh ◽  
G. Tuttle ◽  
K.M. Ho
Keyword(s):  
Photonic Crystals ◽  
Resonant Cavity

scholarly journals Photonic Crystals: Shaping the Flow of Thermal Radiation

2009 ◽  
Vol 1162 ◽  
Author(s):  
Ivan Čelanović ◽  
Michael Ghebrebrhan ◽  
Yi Xiang Yeng ◽  
John Kassakian ◽  
Marin Soljačić ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Thermal Emission ◽  
Resonant Cavity ◽  
Broad Band ◽  
Selective Emitter ◽  
Spatial Properties ◽  
Resonant Modes ◽  
Thermal Emitters ◽  
Thermal Emitter ◽  
Vertical Cavity

AbstractIn this paper we explore theory, design, and fabrication of photonic crystal (PhC) based selective thermal emitters. In particular, we focus on tailoring spectral and spatial properties by means of resonant enhancement in PhC's. Firstly, we explore narrow-band resonant thermal emission in photonic crystals exhibiting strong spectral and directional selectivity. We demonstrate two interesting designs based on resonant Q-matching: a vertical cavity enhanced resonant thermal emitter and 2D silicon PhC slab Fano-resonance based thermal emitter. Secondly, we examine the design of 2D tungsten PhC as a broad-band selective emitter. Indeed, based on the resonant cavity coupled resonant modes we demonstrate a highly selective, highly-spectrally efficient thermal emitter. We show that an emitter with a photonic cut-off anywhere from 1.8 μm to 2.5 μm can be designed.

A Four-Channel Optical Demultiplexer Using Photonic Crystal-Based Resonant Cavities

2018 ◽  
Vol 39 (4) ◽  
pp. 369-373 ◽  
Author(s):  
Hassan Absalan
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
Resonant Cavity ◽  
Resonant Mode ◽  
Two Dimensional ◽  
Resonant Cavities ◽  
Optical Channels ◽  
All Optical ◽  
Do So

Abstract The aim of this paper was to propose and design an all optical four-channel demultiplexer using two-dimensional photonic crystals. To do so a resonant cavity was created by reducing the radius of the two adjacent rods. The radius of these defect rods was about 85 nm. The resonant cavity has a resonant mode at 1,557 nm. Then by using four resonant cavities with different radius values a four-channel optical demultiplexer was designed. The demultiplexer has four optical channels at λ1=1,537 nm, λ2=1,546 nm, λ3=1,553 nm and λ4=1,560 nm.

4-Channel Tunable Optical Demultiplexer Based on Nonlinearity Phenomenon in 2D Resonant Cavity Photonic Crystals

Frequenz ◽  
2020 ◽  
Vol 74 (1-2) ◽  
pp. 9-15 ◽  
Author(s):  
Reza Talebzadeh ◽  
Farhad Mehdizadeh ◽  
Ali Naseri
Keyword(s):  
Refractive Index ◽  
Photonic Crystals ◽  
Wavelength Division Multiplexing ◽  
Resonant Cavity ◽  
Nonlinear Effects ◽  
Transmission Efficiency ◽  
Input Power ◽  
Mean Value ◽  
Resonant Condition ◽  
Wavelength Division

AbstractIn this paper, we propose a new structure based on photonic crystals to realise a demultiplexing operation for dense wavelength division multiplexing transmission systems. In this demultiplexer, the resonant cavities were responsible for selecting the wavelength. By imposing defect rods to these cavities, the modes could resonate at the desired frequencies. As we wanted to see the nonlinear effects, the material that was chosen for defect rods were doped glass. The refractive index of this glass in 1550 nm is 1.41. Increasing the input power causes variation in the refractive index of defect rods and as a result resonant condition of whole cavity alerts so a tenable demultiplexer can be investigated. Based on the results, the average pass bands of channels are near to 1.5 nm and the channel spacing is approximately 3.95 nm. The proposed demultiplexer acts in a near-complete transmission efficiency and the mean value of the crosstalk was −19 dB.

New design of four-channel add-drop filters based on double-resonant cavity photonic crystals

2009 ◽  
Vol 26 (4) ◽  
pp. 640 ◽  
Author(s):  
Yaw-Dong Wu ◽  
Ke-Wei Hsu ◽  
Tien-Tsorng Shih ◽  
Jian-Jang Lee
Keyword(s):  
Photonic Crystals ◽  
Resonant Cavity
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