SiGeC Waveguide for All-Optical Data Switching

Huang, Bo-Ji; Tsai, C.S.; Lin, Gong‐Ru; Cheng, Chih‐Hsien; Wang, Huai‐Yung; Chi, Yu‐Chieh; Chang, Phei‐Lang; Wu, Chih‐I

doi:10.1021/acsphotonics.8b00105

Cited by 18 publications

(7 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The aforementioned description indicates that for the two channels, the ultrastrong photonic localizations near node 2 are 8.1199 × 10 5 and 3.3803 × 10 6 , respectively, and then, we set

false| ψ_{trueprefixmax} |^{2} \approx 8.1 \times 10^{5}

. The localized intensity within the DROWN can be as high as 1.03 × 10 7 W m −2 , and experiments have shown that Si‐based waveguides can withstand instant intensity up to 5.60 × 10 13 W m −2 while still remaining stable. In conclusion, via Equation the threshold control energy can be deduced, as for the designed switching, as

E = \frac{10^{- 2} \cdot (3 \times 10^{- 15}) \cdot (100 \times 10^{- 15})}{(8.1 \times 10^{5}) \cdot (1.2 \times 10^{- 15})} \approx 2.90 \times 10^{- 21} false(normalJ false)

…”

Section: Extraordinary Switching Propertiesmentioning

confidence: 99%

“…It has been reported that the threshold control energy for metamaterial switching reaches 3 nJ and that for SiGeC waveguide switching arrives at 22 pJ . The lowest threshold control energies are achieved by microring resonators (720 fJ) and by photonic nanojets with semiconductor nanoparticles (300 fJ).…”

Section: Extraordinary Switching Propertiesmentioning

confidence: 99%

“…Recent progress and achievements in nonlinear optical materials have accelerated investigations and improvements of all‐optical switching . Resembling electronic counterparts, all‐optical switches are central to all‐optical computational systems .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Theoretical Design of a Pump‐Free Ultrahigh Efficiency All‐Optical Switching Based on a Defect Ring Optical Waveguide Network

Yang

2019

Annalen der Physik

View full text Add to dashboard Cite

A theoretical design of a defect ring optical waveguide network is proposed to construct a pump-free ultrahigh efficiency all-optical switch. This switch creates ultrastrong photonic localization and causes the nonlinear dielectric in the defect waveguide to intensely respond. At its ON state, this material defect without Kerr response helps to produce a pair of sharp pass bands in the transmission spectrum to form the dual channel of the all-optical switch. When it is switched to its OFF state, the strong Kerr response induced refractive index change in the high nonlinear defect waveguide strongly alters the spectrum, leading to a collapse of the dual channels. Network equation and generalized eigenfunction method are used to numerically calculate the optical properties of the switch and obtain a threshold control energy of about 2.90 zJ, which is eight orders of magnitude lower than previously reported. The switching efficiency/transmission ratio exceeds 3×10 11 , which is six orders of magnitude larger than previously reported. The state transition time is nearly 108 fs, which is approximately two orders of magnitude faster than the previously reported shortest time. Furthermore, the switch size can be much smaller than 2.6 µm and will be suitable for integration.

show abstract

“…The aforementioned description indicates that for the two channels, the ultrastrong photonic localizations near node 2 are 8.1199 × 10 5 and 3.3803 × 10 6 , respectively, and then, we set

false| ψ_{trueprefixmax} |^{2} \approx 8.1 \times 10^{5}

E = \frac{10^{- 2} \cdot (3 \times 10^{- 15}) \cdot (100 \times 10^{- 15})}{(8.1 \times 10^{5}) \cdot (1.2 \times 10^{- 15})} \approx 2.90 \times 10^{- 21} false(normalJ false)

…”

Section: Extraordinary Switching Propertiesmentioning

confidence: 99%

Section: Extraordinary Switching Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical Design of a Pump‐Free Ultrahigh Efficiency All‐Optical Switching Based on a Defect Ring Optical Waveguide Network

Yang

2019

Annalen der Physik

View full text Add to dashboard Cite

show abstract

“…[ 3,4 ] In recent years, the research progress and achievements of nonlinear materials field [ 5–13 ] have also accelerated the research and improvement of all‐optical switches. [ 14–19 ] The all‐optical switch has great value in science and practice, and can be traced back to the finding of optical bistability in 1969. [ 20 ] Generally, the performance of all‐optical switching devices is evaluated by the following five basic indexes: switch efficiency/ transmission ratio, threshold energy, state transition time, switch size, and Q‐factor.…”

Section: Introductionmentioning

confidence: 99%

A Self‐Defocusing Effect in Series of Networks for Nano All‐Optical Switching

Yang

2021

Annalen der Physik

View full text Add to dashboard Cite

A theoretical design of all‐optical switches based on series of networks (SNs) is proposed. With increment of the fractal generation, the density of loops (d1:d2=1:2) in networks, which can efficiently produce antiresonances, increases exponentially, increasing switching efficiency to a high level. To acquire superior performance of the switching efficiency, the nonlinear material with negative nonlinear refractive index was chosen to insert into the networks, inducing self‐defocusing effect and decreasing the transmission. Further, the SNs with a defective waveguide length create ultra‐strong photonic localization and reduce the threshold energy. The switching efficiency of just the third type of SN was calculated and found to be approximately 5.25 × 1026, which is nine orders of magnitude higher than that previously reported. The threshold energy of just the third type of SN is about 0.66zJ, which is one order of magnitude lower than that reported previously. Moreover, the switching efficiency increases monotonously, and the threshold energy decreases rapidly with increasing fractal generation.

show abstract

“…In addition, Huang et al . also employed the FCA effect in SiGeC waveguide to achieve the PRZ-OOK data format inversion up to 6 Gbit/s 22 . The all-optical logic gate is necessary to play a key role for ultrafast data processing in optical quantum computing and communication, which was mainly implemented with semiconductor optical amplifier (SOA) or periodically poled lithium niobate (PPLN) devices 23 , 24 .…”

Section: Introductionmentioning

confidence: 99%

Realizing multi-functional all-optical data processing on nanoscale SiC waveguides

Syu

Cheng

Wang

et al. 2018

Sci Rep

Self Cite

View full text Add to dashboard Cite

All-optical logics are realized on nanoscale SiC waveguides with add-drop micro-ring functionality, including the TE/TM polarized data decoding, the dual-port Kerr switching and gating beyond 12 Gbit/s. With employing the C-C bond enriched SiC thin film upon thermal oxide, the nonlinear refractive index of up to 2.44 × 10−12 cm2/W enables the asymmetric waveguide with polarization distinguishable transmission, which provides a polarization-selectivity to discreminate the TE/TM polarized data decoding with an nearly 9-dB extinction ratio. The TE/TM polarized decoding performance is comparable with a state-of-the-art fiberized in-line polarizer. The complementary transmission in the bus waveguide port facilitates the dual-port Kerr switching for data format conversion/inversion in both add/drop channels. Owing to the TE/TM polarization discriminated throughput, the asymmetric add-drop waveguide micro-ring also permits all-optical AND logic gating functions, where the ON-state outputs only if the pump bit is set at ON state and the probe bit with matched polarization. These results reveal the multi-functionality of the nanoscale SiC add-drop micro-ring waveguide for future photonic logics on chip.

show abstract

SiGeC Waveguide for All-Optical Data Switching

Cited by 18 publications

References 55 publications

Theoretical Design of a Pump‐Free Ultrahigh Efficiency All‐Optical Switching Based on a Defect Ring Optical Waveguide Network

Theoretical Design of a Pump‐Free Ultrahigh Efficiency All‐Optical Switching Based on a Defect Ring Optical Waveguide Network

A Self‐Defocusing Effect in Series of Networks for Nano All‐Optical Switching

Realizing multi-functional all-optical data processing on nanoscale SiC waveguides

Contact Info

Product

Resources

About