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Device m. used in mounting couplings of optical communication cables. Knot fur. fastening wires of the armor of the optical cable (OK) contains intracone metal. a sleeve and a down conductor stand made at the same time with it. Inside the conical sleeve has a center. a hole with a conical section and a protrusion with thread on the outer surface. In addition, it connects to the armor cover. OK by means of a conical insert and a union nut with a stop device on a stepped inner surface interacting with the end face of the insert. The down conductor rack of each node is fur. the armor mounting has an additional conical hole and an overlay with a conical protrusion, during the force of which the ground wire is fixed. Tech. the result is an increase in the reliability of the removal of induced thunderstorm currents to the earth and the currents induced in the OK armor with electronic magn.
Variational analysis of switching solitons in a nonlinear directional coupler with saturable nonlinearity.
Using the variational method, a comparative analysis of the switching of solitons in a nonlinear directional coupler in the process of saturation of nonlinearity is carried out. Two nonlinearity models are considered (above average and average). It is shown that the switching characteristics at the same fiber parameters are significantly different from each other for these models. The soliton switching characteristics for these models are obtained. Their comparison is made.
fiber optic installation jobs
Selective wavelength switching.
A new optical device for selective wavelength switching is proposed. The device is based on a Bragg grating with a coupler in the form of a Michelson interferometer with multimode interference. The analysis of the device is based on the theory of mode propagation. For the manufacture of this device m. Used SiO 2 / Si technology.
The influence of spurious connections in bends on optical switching in directional couplers.
Using the theory of coupled modes, the modified conditions for switching optical switches on directional couplers in the presence of spurious connections in the input/output bends are studied. It is established that the length of the parallel segment of the switch d. less than the length of the communication region is selected (I c = π / 2 k 0 ). This ratio has a significant effect on the spurious coupling. In the presence of weak parasitic bonds, the switching voltage remains almost the same, and in the case of strong bonds, it should be. increased accordingly.
Cross-switching with a dynamic selection of several wavelengths based on fiber Bragg gratings and fur. optical switches.
An optical cross-switch with a dynamic selection of several wavelengths is proposed for fiber-optic communication networks with spectral multiplexing. The cross-switch design consists of fiber Bragg gratings and fur. optical switches. When implementing the device in the form of experiments. The installation achieved insignificant power losses when transmitting information via 3 spectrally multiplexed channels over a distance of ~ 100 km. The network used std. single-mode fiber. The transmission rate per channel was 2.5 Gb / s. The developed cross-switch allows you to build networks with greater reliability and flexibility.
Device m. used in mounting couplings of optical communication cables. Knot fur. fastening wires of the armor of the optical cable (OK) contains intracone metal. a sleeve and a down conductor stand made at the same time with it. Inside the conical sleeve has a center. a hole with a conical section and a protrusion with thread on the outer surface. In addition, it connects to the armor cover. OK by means of a conical insert and a union nut with a stop device on a stepped inner surface interacting with the end face of the insert. The down conductor rack of each node is fur. the armor mounting has an additional conical hole and an overlay with a conical protrusion, during the force of which the ground wire is fixed. Tech. the result is an increase in the reliability of the removal of induced thunderstorm currents to the earth and the currents induced in the OK armor with electronic magn.
Variational analysis of switching solitons in a nonlinear directional coupler with saturable nonlinearity.
Using the variational method, a comparative analysis of the switching of solitons in a nonlinear directional coupler in the process of saturation of nonlinearity is carried out. Two nonlinearity models are considered (above average and average). It is shown that the switching characteristics at the same fiber parameters are significantly different from each other for these models. The soliton switching characteristics for these models are obtained. Their comparison is made.
fiber optic installation jobs
Selective wavelength switching.
A new optical device for selective wavelength switching is proposed. The device is based on a Bragg grating with a coupler in the form of a Michelson interferometer with multimode interference. The analysis of the device is based on the theory of mode propagation. For the manufacture of this device m. Used SiO 2 / Si technology.
The influence of spurious connections in bends on optical switching in directional couplers.
Using the theory of coupled modes, the modified conditions for switching optical switches on directional couplers in the presence of spurious connections in the input/output bends are studied. It is established that the length of the parallel segment of the switch d. less than the length of the communication region is selected (I c = π / 2 k 0 ). This ratio has a significant effect on the spurious coupling. In the presence of weak parasitic bonds, the switching voltage remains almost the same, and in the case of strong bonds, it should be. increased accordingly.
Cross-switching with a dynamic selection of several wavelengths based on fiber Bragg gratings and fur. optical switches.
An optical cross-switch with a dynamic selection of several wavelengths is proposed for fiber-optic communication networks with spectral multiplexing. The cross-switch design consists of fiber Bragg gratings and fur. optical switches. When implementing the device in the form of experiments. The installation achieved insignificant power losses when transmitting information via 3 spectrally multiplexed channels over a distance of ~ 100 km. The network used std. single-mode fiber. The transmission rate per channel was 2.5 Gb / s. The developed cross-switch allows you to build networks with greater reliability and flexibility.
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