Fig. 5.1 OEO DM representation as a laser spanned by the positive Feedback Chain: (a) The
structural diagram of OEO DM, (b) The diagram of OEO MZ with the block “Feedback Chain,” (c)
The structure diagram of OEO MZ with the block “PF FOLD.” Laser is QWLD, P is a polarizer, OF
is the optical filter, PD is the photodetector, A is the RF amplifier, F is the RF filter, C is the RF
coupler, DC is the block for laser optical frequency stabilization or the output power with utilization
of adjustment by the laser DC pumping current. (d) The analog model of OEO DM as QWLD
enclosed by the positive feedback “Feedback Chain.” The laser model is presented in the dipole
approximation with the controlling element. “Feedback Chain” consists of the optical fiber (OF),
the photodetector (PD), the RF filter (F), RF amplifier (A). We use designations: “
R ” is the
integrator, “” is the multiplier, “+” is the adder, “Ô is the operation of complex conjugation,
“PUMP” is the pumping α N0
5.1 Symbolic and Abbreviated Equations of OEO
205
structural diagram of OEO DM, (b) The diagram of OEO MZ with the block “Feedback Chain,” (c)
The structure diagram of OEO MZ with the block “PF FOLD.” Laser is QWLD, P is a polarizer, OF
is the optical filter, PD is the photodetector, A is the RF amplifier, F is the RF filter, C is the RF
coupler, DC is the block for laser optical frequency stabilization or the output power with utilization
of adjustment by the laser DC pumping current. (d) The analog model of OEO DM as QWLD
enclosed by the positive feedback “Feedback Chain.” The laser model is presented in the dipole
approximation with the controlling element. “Feedback Chain” consists of the optical fiber (OF),
the photodetector (PD), the RF filter (F), RF amplifier (A). We use designations: “
R ” is the
integrator, “” is the multiplier, “+” is the adder, “Ô is the operation of complex conjugation,
“PUMP” is the pumping α N0
5.1 Symbolic and Abbreviated Equations of OEO
205