Transmission of 61 C-Band Channels with L-Band Interferers over Record 618km of Hollow-Core-Fiber

We recirculated 61 PM-QPSK C-band channels @32GBaud, with simultaneous L-band loading, through 7.72km of hollow-core NANF with <1dB/km loss. We reached 772km for the mid-channel, and 618km for all channels at average GMI 3.44 bits/symbol.