OFR-100 Optical filter-receiver

     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
     The receiver is equipped with SC/APC sockets for optical signals and an F-connector for radio signal.
     The loss of demultiplexer optical signal is not worse than 50dB, directivity is not worse than 50dB, transient attenuation between 1310nm (1490nm) and 1550nm is not worse than 50dB, attenuation per pass is not less than 1dB.
     The maximum output power (according to DIN 45004) is 119dB/µV, optical signal availability display is 1550nm, output level adjustment is 0...-20dB, switched power supply device.


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