The proposed housing design of the device for splicing and storing fiber optic cables are characterized by the presence of axially spaced end plates, which determine the internal volume of the housing allocated for the placement and storage of spliced cables. The endplates are connected to each other by a pair of rigid plates, and 2 longitudinal elements of the body are superimposed on the endplates, forming the device body itself. The flanges of the longitudinal elements are hermetically fastened to the endplates and to each other, thereby ensuring the integrity of the housing as a whole. This design is characterized by ease of assembly and easy adaptability to changes in the number of spliced cables.
Method and device for monitoring the optical power of an optical signal transmitted with wavelength division multiplexing.
A method and a device for controlling the optical power of a transmitted optical signal in a fiber-optic communication system with spectral channel multiplexing are proposed. Previously, an additional control channel was introduced into the system, with which the optical power of the signals was maintained at a constant level. But in this case, cross-distortion arose that negatively affected the transmitted optical signal. To eliminate this influence, it was proposed to add a control optical signal with a fixed level of max. optical power. Changes in the average optical power of the control signal are made by adjusting the period or pulse width of the control optical signal.
Measurement of polarization dispersion of optical fibers.
Until recently, the main form of a dispersion, limiting the transmission rate of single-mode fibers, was considered chromatic. In recent years, its influence can be compensated more fully. In the process of creating fiber-optic transmission systems with a speed of ~ 10 Mbps (in Europe, STM-64) and work on creating systems with a speed of 40 Gbit / s, it was discovered that there was another reason for limiting the transmission rate in the form of a dispersion of the polarization state. Its occurrence is due to the division of the main wave into 2 mutually perpendicular components, the propagation time of which may slightly differ from each other.
fiber cable installer
The reason for the appearance of polarization modes is the deviation of the cross-sectional shape of the fiber core from the correct circle. Based on the 1st series of measurements of polarization dispersion International Electrotechn. the commission determined its maximum permissible value of ~ 0.5 ps/km. Subsequent measurements showed that with strict adherence to the manufacturing technology of fiber polarization dispersion modes. m. b. reduced to values ~ 0.1ps / km. In the present work is underway to refine this norm with a pronounced desire to bring it to a value of ~ 0.1 ps/km. The principle of measuring the polarization dispersion of modes is described.
Control of optical transmission systems with waves. seal manufacturers.
A subsidiary company of Hewlett - Packard GmbH (Germany), specializing in the field of measurement technology, has developed 2 sets of measuring equipment for manufacturers of optical transmission systems with waves. seal. One is for DWDM compaction systems, the other is for OADM systems . Both sets m. used for measurements at transmission rates up to 2.5 Gbit / s. Each set enables simultaneous measurement of up to 80 channels.
Method and device for monitoring the optical power of an optical signal transmitted with wavelength division multiplexing.
A method and a device for controlling the optical power of a transmitted optical signal in a fiber-optic communication system with spectral channel multiplexing are proposed. Previously, an additional control channel was introduced into the system, with which the optical power of the signals was maintained at a constant level. But in this case, cross-distortion arose that negatively affected the transmitted optical signal. To eliminate this influence, it was proposed to add a control optical signal with a fixed level of max. optical power. Changes in the average optical power of the control signal are made by adjusting the period or pulse width of the control optical signal.
Measurement of polarization dispersion of optical fibers.
Until recently, the main form of a dispersion, limiting the transmission rate of single-mode fibers, was considered chromatic. In recent years, its influence can be compensated more fully. In the process of creating fiber-optic transmission systems with a speed of ~ 10 Mbps (in Europe, STM-64) and work on creating systems with a speed of 40 Gbit / s, it was discovered that there was another reason for limiting the transmission rate in the form of a dispersion of the polarization state. Its occurrence is due to the division of the main wave into 2 mutually perpendicular components, the propagation time of which may slightly differ from each other.
fiber cable installer
The reason for the appearance of polarization modes is the deviation of the cross-sectional shape of the fiber core from the correct circle. Based on the 1st series of measurements of polarization dispersion International Electrotechn. the commission determined its maximum permissible value of ~ 0.5 ps/km. Subsequent measurements showed that with strict adherence to the manufacturing technology of fiber polarization dispersion modes. m. b. reduced to values ~ 0.1ps / km. In the present work is underway to refine this norm with a pronounced desire to bring it to a value of ~ 0.1 ps/km. The principle of measuring the polarization dispersion of modes is described.
Control of optical transmission systems with waves. seal manufacturers.
A subsidiary company of Hewlett - Packard GmbH (Germany), specializing in the field of measurement technology, has developed 2 sets of measuring equipment for manufacturers of optical transmission systems with waves. seal. One is for DWDM compaction systems, the other is for OADM systems . Both sets m. used for measurements at transmission rates up to 2.5 Gbit / s. Each set enables simultaneous measurement of up to 80 channels.
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