All-optical switching in 2D silicon photonic crystals with low loss waveguides and optical cavities.
A study of the optical transmission of low-loss W1.5 photonic crystal waveguides built on silicon membranes and operating at telecom wavelengths is presented. The feasibility of performing all-optical switching is demonstrated for W1.5 waveguides coupled with L3 cavities, systems amenable for incorporation in on-chip devices. Switching of waveguide transmission is achieved by means of optical excitation of free carriers using a 2.5 ns pump laser. Experimental results are reproduced by finite-difference time-domain simulations which model the response of the finite system and band structure calculations describing the infinite, ideal one.
Belotti
Michele
M
Dipartimento di Fisica A Volta, UdR CNISMUniversità degli Studi di Pavia, Pavia, Italy. belotti@fisicavolta.unipv.it
Galisteo Lòpez
Juan F
JF
De Angelis
Sara
S
Galli
Matteo
M
Maksymov
Ivan
I
Andreani
Lucio C
LC
Peyrade
David
D
Chen
Yong
Y
D003198:Computer Simulation; D017076:Computer-Aided Design; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D008027:Light; D008420:Manufactured Materials; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*