Table 1 List of the SFWM processes related to different polarization combinations of the participating electric fields.

From: Frequency and polarization emission properties of a photon-pair source based on a photonic crystal fiber

Process

\(p_1\)

\(p_2\)

s  (\(\lambda _s>\lambda _p\))

i  (\(\lambda _p>\lambda _i\))

a

x

x

x

x

b

y

y

y

y

c

x

y

x

y

d

x

y

y

x

e

x

x

y

y

f

y

y

x

x

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