TY - GEN
T1 - Photonic chip based tunable slow and fast light via stimulated Brillouin scattering
AU - Pant, Ravi
AU - Byrnes, Adam
AU - Poulton, Christopher G.
AU - Li, Enbang
AU - Choi, Duk Yong
AU - Madden, Steve
AU - Luther-Davies, Barry
AU - Eggleton, Benjamin J.
PY - 2012
Y1 - 2012
N2 - The ability to control the speed of light on an optical chip is fundamental to the development of nanophotonic components for alloptical signal processing and sensing [1-7]. However this is a significant challenge, because chip-scale waveguides require very large changes in group index (Δn g) to achieve appreciable pulse delays. Here, we use Stimulated Brillouin Scattering (SBS) to report the demonstration of on-chip slow, fast and negative group velocities with Δn g ranging from -44 to +130, and delays of up to 23ns at a pump power of ∼300mW and propagation length of 7cm. These results are obtained using a highly-nonlinear chalocogenide (As 2S 3) rib waveguide, in which the confinement of both photons and phonons results in strong interaction. SBS can be used to achieve controllable pulse delays at room temperature over a large wavelength and signal-bandwidth [5]. These results open up a new set of photonic applications ranging from microwave photonics [8] to spectrometry [4].
AB - The ability to control the speed of light on an optical chip is fundamental to the development of nanophotonic components for alloptical signal processing and sensing [1-7]. However this is a significant challenge, because chip-scale waveguides require very large changes in group index (Δn g) to achieve appreciable pulse delays. Here, we use Stimulated Brillouin Scattering (SBS) to report the demonstration of on-chip slow, fast and negative group velocities with Δn g ranging from -44 to +130, and delays of up to 23ns at a pump power of ∼300mW and propagation length of 7cm. These results are obtained using a highly-nonlinear chalocogenide (As 2S 3) rib waveguide, in which the confinement of both photons and phonons results in strong interaction. SBS can be used to achieve controllable pulse delays at room temperature over a large wavelength and signal-bandwidth [5]. These results open up a new set of photonic applications ranging from microwave photonics [8] to spectrometry [4].
KW - chalocogenide
KW - group index
KW - on-chip
KW - slow light
KW - stimulated Brillouin scattering
KW - tunable delay
UR - http://www.scopus.com/inward/record.url?scp=84862292250&partnerID=8YFLogxK
U2 - 10.1117/12.923100
DO - 10.1117/12.923100
M3 - Conference contribution
SN - 9780819491268
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Nonlinear Optics and Applications VI
T2 - Nonlinear Optics and Applications VI
Y2 - 16 April 2012 through 18 April 2012
ER -