Development of OFDM Optical Signal Transceiver Based on AWGR

In fiber-optic networks, an increase in the channel speed while maintaining one carrier encounters the problem of a sharp reduction in the transmission distance without regeneration. The need to build additional reinforcement points leads to an increase in the cost of communication systems. The optimal solution to preserve the transmission range and increase the channel speed is the use of multiple carrier frequencies in one combined channel, which is commonly called a superchannel. One of the possible ways to form a superchannel is OFDM. Since the inverse Fourier transform is topologically identical to the Fourier transform, AWGR can be used as an OFDM signal multiplexer in the transmitter. The device of a transceiver is being investigated, which will work as a multiplexer of several input optical channels and a transmitter of one common superchannel into a communication channel.