Functions presented in Fig. 6.28b of suppression coefficients K
2
2ΓPN ¼ KFN and
K
2
ΓAN ¼ KAN allow the conclusion that suppression (owing to optimization of the
laser and RF FODL parameters) of the phase noise is approximately by ten times
more than PSD of the phase noise in OEO MZ on the offset from the carrier of 1 kHz
at the geometrical length of the optical fiber of 8–20 km at the laser power of 30 mW.
At offset from the carrier of 10 kHz, at tenfold suppression of the phase noise,
requirements to the geometrical length of the optical fiber are reduced and is 2–5 km
at the laser power of 30 mW.
Fig. 6.28 (a) Functions of the SSB power spectral density (SSB PSD) of the phase noise in OEO
MZ S(T FOS ) versus the delay time T FOS in FOS for different values of offsets F of the generation
frequency 10 GHz. The width of the laser emission spectral line is Δv ¼ 10 kHz. Different curves
in plots correspond to different offsets F from the generation frequency 10 GHz. Curve 1 F ¼ 1 kHz,
curve 2 F ¼ 10 kHz, curve 3 F ¼ 100 kHz. (b) Functions of suppression coefficients of the phase
noises K
2
2ΓPN ¼ KFN and the amplitude noises K
2
ΓAN ¼ KAN in OEO MZ with the single optical
fiber in RF FODL versus the delay in FOS T FOS at different frequency offsets by F (from the
generation frequency of OEO MZ f 0 ¼ 10 GHz) and for different power P OL of the QWLD optical
emission. (c) The coefficient KFN(F) as a function of the offset F (from the generation frequency of
OEO MZf 0 ¼ 10 GHz) at different values of delay in FOS T FOS and the power P OL of the QWLD
optical emission
6.5 Differential Fluctuation Equations of OEO MZ
347
2
2ΓPN ¼ KFN and
K
2
ΓAN ¼ KAN allow the conclusion that suppression (owing to optimization of the
laser and RF FODL parameters) of the phase noise is approximately by ten times
more than PSD of the phase noise in OEO MZ on the offset from the carrier of 1 kHz
at the geometrical length of the optical fiber of 8–20 km at the laser power of 30 mW.
At offset from the carrier of 10 kHz, at tenfold suppression of the phase noise,
requirements to the geometrical length of the optical fiber are reduced and is 2–5 km
at the laser power of 30 mW.
Fig. 6.28 (a) Functions of the SSB power spectral density (SSB PSD) of the phase noise in OEO
MZ S(T FOS ) versus the delay time T FOS in FOS for different values of offsets F of the generation
frequency 10 GHz. The width of the laser emission spectral line is Δv ¼ 10 kHz. Different curves
in plots correspond to different offsets F from the generation frequency 10 GHz. Curve 1 F ¼ 1 kHz,
curve 2 F ¼ 10 kHz, curve 3 F ¼ 100 kHz. (b) Functions of suppression coefficients of the phase
noises K
2
2ΓPN ¼ KFN and the amplitude noises K
2
ΓAN ¼ KAN in OEO MZ with the single optical
fiber in RF FODL versus the delay in FOS T FOS at different frequency offsets by F (from the
generation frequency of OEO MZ f 0 ¼ 10 GHz) and for different power P OL of the QWLD optical
emission. (c) The coefficient KFN(F) as a function of the offset F (from the generation frequency of
OEO MZf 0 ¼ 10 GHz) at different values of delay in FOS T FOS and the power P OL of the QWLD
optical emission
6.5 Differential Fluctuation Equations of OEO MZ
347