OFR-100 Optical filter-receiver |
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An optical filter receiver OFR-100 is intended for operation in the networks with a WDM technology (multiplexing with wavelength division). The receiver contains a built-in demultiplexer dividing the signal injected to an optical input (with the wavelengths of 1310nm, 1490nm, 1550nm ) into two subranges: the 1st - 1550nm and the 2nd - 1310nm and 1490nm. The signal of the first subrange of a -3...+2 dBm power is transformed into the electrical signal of the TV range (47-860MHz) for a further amplification and distribution in CATV house networks. The signal of the second subrange (1310nm and 1490nm) of a -10...0 dBm power is injected to an optical output. The signal with a wavelength of 1490nm is used for Ethernet forward channel transmission as a rule and the signal with a 1310nm wave length is used for Ethernet reverse channel transmission like in fig.1 |
Fig. 1 - Scheme of OFR-100 turning on
An example of an optical diplexer OD-100 and the optical filter-receiver OFR-100 application to arrange converted Ethernet data (1310, 1490nm) and TV signal (1550nm) transmission over the same optical fibre is given in fig.2.
Fig. 2