Wideband group velocity independent coupling into slow light silicon photonic crystal waveguide

2010 ◽  
Vol 97 (18) ◽  
pp. 183302 ◽  
Author(s):  
Che-Yun Lin ◽  
Xiaolong Wang ◽  
Swapnajit Chakravarty ◽  
Beom Suk Lee ◽  
Wei-Cheng Lai ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Group Velocity ◽  
Slow Light ◽  
Photonic Crystal Waveguide ◽  
Silicon Photonic

scholarly journals Double-layer graphene on photonic crystal waveguide electro-absorption modulator with 12 GHz bandwidth

Nanophotonics ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 2377-2385 ◽  
Author(s):  
Zhao Cheng ◽  
Xiaolong Zhu ◽  
Michael Galili ◽  
Lars Hagedorn Frandsen ◽  
Hao Hu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Double Layer ◽  
Slow Light ◽  
Modulation Depth ◽  
Photonic Crystal Waveguide ◽  
Optical Modulators ◽  
Layer Graphene ◽  
Silicon Photonic ◽  
On Chip ◽  
Silicon Based

AbstractGraphene has been widely used in silicon-based optical modulators for its ultra-broadband light absorption and ultrafast optoelectronic response. By incorporating graphene and slow-light silicon photonic crystal waveguide (PhCW), here we propose and experimentally demonstrate a unique double-layer graphene electro-absorption modulator in telecommunication applications. The modulator exhibits a modulation depth of 0.5 dB/μm with a bandwidth of 13.6 GHz, while graphene coverage length is only 1.2 μm in simulations. We also fabricated the graphene modulator on silicon platform, and the device achieved a modulation bandwidth at 12 GHz. The proposed graphene-PhCW modulator may have potentials in the applications of on-chip interconnections.

Characteristics of Slow Light in a Photonic Crystal Coupled-Cavity Waveguide

2014 ◽  
Vol 887-888 ◽  
pp. 437-441
Author(s):  
Chang Xin Zhang ◽  
Xing Sheng Xu ◽  
Wei Xi
Keyword(s):  
Photonic Crystal ◽  
Group Velocity ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Slow Light ◽  
Fdtd Method ◽  
Photonic Crystal Waveguide ◽  
Difference Time ◽  
Coupled Cavity ◽  
Coupled Cavity Waveguide

A two-dimensional (2D) triangular lattice photonic crystal coupled-cavity waveguide is designed and optimized. The transmission spectrum of the PC waveguide with TE polarization is calculated by using the finite-difference time-domain (FDTD) method, and the group velocity of c/131.18 at the wavelength is obtained. Through optimizing the parameters of photonic crystal waveguide, different resonance length are obtained by changing the number of the continous air holes. The smallest group velocity is obtained to be c/2209 in the coupled-cavity waveguide with 15 air holes. The mechanism of slow light in the coupled-cavity waveguide of photonic crystal is analyzed.

scholarly journals Ultracompact all-optical XOR logic gate in a slow-light silicon photonic crystal waveguide

2011 ◽  
Vol 19 (21) ◽  
pp. 20681 ◽  
Author(s):  
C. Husko ◽  
T. D. Vo ◽  
B. Corcoran ◽  
J. Li ◽  
T. F. Krauss ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Logic Gate ◽  
Photonic Crystal Waveguide ◽  
Silicon Photonic ◽  
All Optical

Group velocity independent coupling into slow light photonic crystal waveguide on silicon nanophotonic integrated circuits

2011 ◽  
Author(s):  
Che-Yun Lin ◽  
Xiaolong Wang ◽  
Swapnajit Chakravarty ◽  
Wei-Cheng Lai ◽  
Beom Suk Lee ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Integrated Circuits ◽  
Group Velocity ◽  
Slow Light ◽  
Photonic Crystal Waveguide

scholarly journals Slow Light Tuning in Annular Slotted Photonic Crystal Waveguide with Incoming Polymer

2021 ◽  
Vol 2109 (1) ◽  
pp. 012008
Author(s):  
Konttao Zhu ◽  
Hongxue Yang ◽  
Hui Du
Keyword(s):  
Photonic Crystal ◽  
Group Velocity ◽  
Slow Light ◽  
Transmission Rate ◽  
Group Velocity Dispersion ◽  
Flat Band ◽  
Group Index ◽  
Photonic Crystal Waveguide ◽  
Processing Scheme ◽  
Operating Wavelength

Abstract An advanced post-processing scheme of reconfigurable dielectric infiltration into an annular slotted photonic crystal waveguide (ASPhCW) is proposed in this paper. Ionic liquids have had prominent effects in enhancing the optical properties of photonic crystals, especially in the aspect of tuning the transmission rate and velocity through optical materials. Using the two-dimensional plane wave expansion method, the flat band dispersion of the slow light is obtained and the tuning of the operating wavelength of the crystal could be realized by incoming polymer technology. The operating wavelength tuning range could be as large as 459.27nm and the group index could be tuned as high as 44.8 with a near zero group velocity dispersion. Using this method, a high group index equaling 45 with the bandwidth equaling 11.3nm and the normalized delay bandwidth product (NDBP) equaling 0.25 is realized. This incoming polymer technology provides an effective method of getting flat band of slow light flexibly and makes it possible to offer longer delay and low group velocity after fabrication.

scholarly journals Ultracompact 160 Gbaud all-optical demultiplexing exploiting slow light in an engineered silicon photonic crystal waveguide

2011 ◽  
Vol 36 (9) ◽  
pp. 1728 ◽  
Author(s):  
Bill Corcoran ◽  
Mark D. Pelusi ◽  
Christelle Monat ◽  
Juntao Li ◽  
Liam O’Faolain ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Photonic Crystal Waveguide ◽  
Silicon Photonic ◽  
All Optical

Slow-light effect in a silicon photonic crystal waveguide as a sub-bandgap photodiode

2016 ◽  
Vol 41 (2) ◽  
pp. 289 ◽  
Author(s):  
Yosuke Terada ◽  
Kenji Miyasaka ◽  
Hiroyuki Ito ◽  
Toshihiko Baba
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Photonic Crystal Waveguide ◽  
Light Effect ◽  
Silicon Photonic
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