Optically tunable silicon photonic crystal microcavities

Ndi, Francis C.; Toulouse, J.; Hodson, Tim; Prather, Dennis W.

doi:10.1364/oe.14.004835

Cited by 6 publications

(4 citation statements)

References 7 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although I have focused on cavity-based all-optical switches in this paper, slow light waveguides in photonic crystals have been also employed for all-optical switches with a simple straight waveguide configuration [264], with a directional coupler configuration [265,266] and with a Mach-Zehnder interferometer configuration [194,267]. Cavity-based switches are superior in terms of device size and switching energy in these devices, but these slow-light-waveguide-based switches are advantageous as regards expanding the bandwidth.…”

Section: All-optical Switching Based On Carrier-induced Nonlinearitymentioning

confidence: 99%

Manipulating light with strongly modulated photonic crystals

Notomi¹

2010

Rep. Prog. Phys.

368

320

View full text Add to dashboard Cite

Recently, strongly modulated photonic crystals, fabricated by the state-of-the-art semiconductor nanofabrication process, have realized various novel optical properties. This paper describes the way in which they differ from other optical media, and clarifies what they can do. In particular, three important issues are considered: light confinement, frequency dispersion and spatial dispersion. First, I describe the latest status and impact of ultra-strong light confinement in a wavelength-cubic volume achieved in photonic crystals. Second, the extreme reduction in the speed of light is reported, which was achieved as a result of frequency dispersion management. Third, strange negative refraction in photonic crystals is introduced, which results from their unique spatial dispersion, and it is clarified how this leads to perfect imaging. The last two sections are devoted to applications of these novel properties. First, I report the fact that strong light confinement and huge light-matter interaction enhancement make strongly modulated photonic crystals promising for on-chip all-optical processing, and present several examples including all-optical switches/memories and optical logics. As a second application, it is shown that the strong light confinement and slow light in strongly modulated photonic crystals enable the adiabatic tuning of light, which leads to various novel ways of controlling light, such as adiabatic frequency conversion, efficient optomechanics systems, photon memories and photons pinning.

show abstract

Section: All-optical Switching Based On Carrier-induced Nonlinearitymentioning

confidence: 99%

Manipulating light with strongly modulated photonic crystals

Notomi¹

2010

Rep. Prog. Phys.

368

320

View full text Add to dashboard Cite

show abstract

“…In addition to microring resonators other photonic crystal structures have also been used to demonstrate all-optical switching by detuning the optical bandgap through carrier injection [51,52]. As a consequence of their resonant behaviour, photonic crystals are also prone to bistable operation [53,54], in a similar way as microring resonators.…”

Section: Free-carrier Dispersionmentioning

confidence: 99%

Ultrafast nonlinear all-optical processes in silicon-on-insulator waveguides

Dekker¹,

Usechak²,

Först³

et al. 2007

J. Phys. D: Appl. Phys.

174

117

View full text Add to dashboard Cite

In this review we present an overview of the progress made in recent years in the field of integrated silicon-on-insulator (SOI) waveguide photonics with a strong emphasis on third-order nonlinear optical processes. Although the focus is on simple waveguide structures the utilization of complex structures such as microring resonators and photonic crystal structures is briefly discussed as well. Several fabrication methods are explained and methods which improve optical loss, coupling efficiency and polarization dependence are presented.As the demand for bandwidth increases communication systems are forced to use higher bit rates to accommodate the load. A consequence of high-bit-rate systems is that they require short pulses where the importance of waveguide dispersion tailoring becomes increasingly important. The impact of short pulses on the efficiency of all-optical processes is discussed and recent accomplishments in this field are presented. Numerical results of femtosecond, picosecond and nanosecond pulse propagation in SOI waveguides are compared to provide an insight into the physical processes that dominate at these different time scales. In this work we focus on two-photon absorption (TPA), free-carrier absorption (FCA), plasma dispersion and the optical Kerr effect. After describing these nonlinear effects, some other important all-optical processes based on plasma dispersion and the Kerr effect are described, namely cross-absorption modulation (XAM), self-phase modulation (SPM), cross-phase modulation (XPM), four-wave mixing (FWM) and stimulated Raman scattering (SRS). The latter provides the best hope for practical and/or commercial applications and finds its use in amplification and lasing. Furthermore, we present some guidelines for efficient numerical modelling of propagation in SOI waveguides.This review is a good starting point for those who are new in this hot and rapidly emerging field and gives an overview of important considerations that need to be taken into account when designing, fabricating and characterizing SOI waveguides for ultrafast third-order nonlinear all-optical processing.

show abstract

“…by means of carrier injection) and non-resonant (i.e. by exploiting the Kerr effect) optical pumping (Haché & Bourgeois, 2000;Leonard et al, 2002;Baba et al, 2003;Ndi et al, 2005;Raineri et al, 2005;Britsow at al., 2006;Hu et al, 2006;Ndi et al, 2006;Teo et al, 2006;Hu et al, 2007;Tanabe et al, 2007). When either magnetic or ferro-electric or electro-optic non-linear materials are used to fabricate PhC devices, external magnetic or electric fields can be applied, respectively, to adjust the optical response (Kee et al, 2000;Lyubchanskii et al, 2003;Scrymgeour et al, 2003;Belotelov & Zvezdin, 2005).…”

Section: Introductionmentioning

confidence: 99%

Liquid Crystals into Planar Photonic Crystals

Ferrini¹

2009

New Developments in Liquid Crystals

View full text Add to dashboard Cite

Optically tunable silicon photonic crystal microcavities

Cited by 6 publications

References 7 publications

Manipulating light with strongly modulated photonic crystals

Manipulating light with strongly modulated photonic crystals

Ultrafast nonlinear all-optical processes in silicon-on-insulator waveguides

Liquid Crystals into Planar Photonic Crystals

Contact Info

Product

Resources

About