Table 1: Comparison between non-SOA based gates.

Reported gates categoryReported
gates
Contrast ratio/extinction ratioOperating
speed
Modulation
type
Nonlinear elementPolarization
sensitivity
Integration
capacity

HNLF/DSFXOR/OR/NOT/
AND/NXOR/
NOR/XNOR
20/24.25/30/1
6.5 dB
40 G/10 Gb/sFWM/XPM
/SPM/NPR
DSF/
HNLF-DSF/
DSF
MoreBad

Waveguide
configuration
XOR/NOR/
NOT/NAND/
AND
30/20 dB40 G/100 Mb/sFWM/TFAFP Chip/ waveguideMoreModerate

CirculatorNOR/NOT10 Gb/sGain
modulation
FP-LDMoreModerate

Optical
channel-Dropping
filter
AND/ORDark-bright
solitons
OCDFNoModerate

Multibranch
waveguide
AND/ORLocalized
optical
non-linearity
Multibranch
non-linear
media
MoreCompact

Double heterostructure optical thyristorAND/OR50 dBVCL-DOTNoCompact

AOTFAND/OR300 Gb/sSPMAOTFMoreCompact