Raman mediated ultrafast all-optical NOR gate

Tanmoy Datta; Tanmoy Datta; Mrinal Sen

doi:10.1364/AO.396859

Applied Optics
Vol. 59,
Issue 21,
pp. 6352-6359
(2020)
•https://doi.org/10.1364/AO.396859

Raman mediated ultrafast all-optical NOR gate

Tanmoy Datta and Mrinal Sen

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Tanmoy Datta and Mrinal Sen, "Raman mediated ultrafast all-optical NOR gate," Appl. Opt. 59, 6352-6359 (2020)

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Table of Contents Category
- Optical Devices, Sensors, and Detectors
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The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: May 4, 2020
- Revised Manuscript: June 15, 2020
- Manuscript Accepted: June 21, 2020
- Published: July 16, 2020

Abstract

A new device architecture has been proposed in this paper implementing the all-optical cascadable logic NOR functionality. The device functions based on stimulated Raman scattering (SRS) in silicon nanocrystal embedded slotted photonic crystal waveguide (SPCW). Substantial miniaturizations both in operating power and overall footprint of the device have been achieved owing to the ultrahigh SRS gain of silicon nanocrystal and strong spatio-temporal confinement of the SPCW. Successful operation of the device has been demonstrated at a pulse rate that is as high as 125 Gbps.

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Description	Symbol	Value
Dispersion	$β_{P}$	$1.5 \times 10^{- 8} s / m$
		$- 1.0 \times 10^{- 23} s^{2} / m$
		$2.3 \times 10^{- 36} s^{3} / m$
	$β_{S}$	$7.6 \times 10^{- 8} s / m$
		$- 1.1 \times 10^{- 20} s^{2} / m$
		$6 \times 10^{- 33} s^{3} / m$
Linear loss	$α_{lP}$	100 dB/cm
Linear loss	$α_{lS}$	32 dB/cm
FCA cross section	$σ_{ar}$	$1.45 \times 10^{- 22} m^{2}$
Free carrier dispersion	$σ_{n}$	$4 \times 10^{- 27} m^{3}$
Kerr coefficient	$n_{jk}^{K e r r}$	$2 \times 10^{- 16} m^{2} / W$
TPA coefficient	$β_{jk}^{T P A}$	$50 \times 10^{- 11} m / W$
Effective interaction area	$a_{PP}^{e f f}$	$0.0593 \times 10^{- 12} m^{2}$
	$a_{SS}^{e f f}$	$0.1127 \times 10^{- 12} m^{2}$
	$a_{PS}^{e f f}$	$0.0858 \times 10^{- 12} m^{2}$
Slow-down factor	$S_{P}$	2.27 (unit less)
Slow-down factor	$S_{S}$	11.6 (unit less)
Scaling factor	$ξ$	1 (unit less)

References	Mechanism	Bias, Length/Footprint	Speed	Remarks
[42]	FWM and XGM in SOAs	10 mW, 1 mm	10 Gbps	Slow switching
[43]	XGM in SOA	240 mA, 500 µm	1.25 Gbps	Slow switching
[44]	SOA and fiber delay interferometer	100 mA, 450 µm	40 Gbps	Involves electrical pumping
[45]	Cross-polarization modulation in SOA	250 mA,–	10 Gbps	Slow switching
[46]	Ring resonator based on PhC	–	138.9 Gbps	Practically not sustainable [47,48]^a
[49]	PhC cavity	–	–	Practically not sustainable [47,48]^a
This work	SRS in $S i N C / S i O_{2}$ embedded SPCW	$\sim 3 m W$ , $11 \times 45 µ m^{2}$	125 Gbps	Suitable for PICs

Description	Symbol	Value
Dispersion	$β_{P}$	$1.5 \times 10^{- 8} s / m$
		$- 1.0 \times 10^{- 23} s^{2} / m$
		$2.3 \times 10^{- 36} s^{3} / m$
	$β_{S}$	$7.6 \times 10^{- 8} s / m$
		$- 1.1 \times 10^{- 20} s^{2} / m$
		$6 \times 10^{- 33} s^{3} / m$
Linear loss	$α_{lP}$	100 dB/cm
Linear loss	$α_{lS}$	32 dB/cm
FCA cross section	$σ_{ar}$	$1.45 \times 10^{- 22} m^{2}$
Free carrier dispersion	$σ_{n}$	$4 \times 10^{- 27} m^{3}$
Kerr coefficient	$n_{jk}^{K e r r}$	$2 \times 10^{- 16} m^{2} / W$
TPA coefficient	$β_{jk}^{T P A}$	$50 \times 10^{- 11} m / W$
Effective interaction area	$a_{PP}^{e f f}$	$0.0593 \times 10^{- 12} m^{2}$
	$a_{SS}^{e f f}$	$0.1127 \times 10^{- 12} m^{2}$
	$a_{PS}^{e f f}$	$0.0858 \times 10^{- 12} m^{2}$
Slow-down factor	$S_{P}$	2.27 (unit less)
Slow-down factor	$S_{S}$	11.6 (unit less)
Scaling factor	$ξ$	1 (unit less)

References	Mechanism	Bias, Length/Footprint	Speed	Remarks
[42]	FWM and XGM in SOAs	10 mW, 1 mm	10 Gbps	Slow switching
[43]	XGM in SOA	240 mA, 500 µm	1.25 Gbps	Slow switching
[44]	SOA and fiber delay interferometer	100 mA, 450 µm	40 Gbps	Involves electrical pumping
[45]	Cross-polarization modulation in SOA	250 mA,–	10 Gbps	Slow switching
[46]	Ring resonator based on PhC	–	138.9 Gbps	Practically not sustainable [47,48]^a
[49]	PhC cavity	–	–	Practically not sustainable [47,48]^a
This work	SRS in $S i N C / S i O_{2}$ embedded SPCW	$\sim 3 m W$ , $11 \times 45 µ m^{2}$	125 Gbps	Suitable for PICs

Abstract

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Applied Optics