QWLD is η ¼ P/P bx ¼ 50% (b) and the power spectrum of QWLD optical emission
(c) with the bandwidth of the spectral line of the optical emission (on the half-width)
is 3.0 kHz.
For comparison with other narrowband lasers, Fig. 7.20a, b shows the typical
experimental values of PSD of the amplitude noise and the phase noise of optical
emission of the narrowband QWLD, which characteristics are presented in [15–19]
and in Table 7.1, and PSD of the phase noise of other lasers: DBF, QWLD, FOL, LN
FOL (experimental functions of PSD of the phase noise versus the offset from the
Fig. 7.20 (a) Experimental values of PSD of the amplitude (AN1) and the phase noise (PN1) of for
different modern lasers QWLD with Bragg diffraction lattice; (b) Experimental values of PSD of
the phase noise of for different modern lasers QWLD DBF, QWLD, FOL, LN FOL. DBF is the
laser diode with the resonator with the Bragg diffraction lattice, FOL is the DBR fiber-optical laser,
LN FOL is the low-noise FOL
7.3 OEO DM Analysis on the Base of Abbreviated Differential Equations
407