Polarization division multiplexed 2x10-Gbps transmissions over 10-km long holey fiber in 1.0-μm waveband photonic transport system

Photonic transport systems in the C+L bands have been extensively employed in conventional networks. The continuously expanding demand for greater photonic network capacities has created the need for the use of additional wavebands to strengthen the transmission capacities. We recently focused on the use of a novel wavelength band such as 1.0-μm (thousand band: T band), together with the conventional C and L bands, to enhance the usable optical frequency resources in future photonic networks employing waveband division multiplexing. Furthermore, we successfully demonstrated an ultra-broadband T-band photonic transport system using a holey fiber (HF) transmission line to create a wide range of usable optical frequency resources over 8.4 THz (wavelength range: 1037-1068 nm). In constructing an ultra-broadband photonic transport system for the T, C, and L bands, HF is considered to be a great candidate for an ultra-broadband and high-capacity data transmission line. In this study, we demonstrated a polarization division multiplexing (PDM) photonic transport system for doubling the optical frequency resources in the T band. Error-free PDM photonic transmissions in the T band with a clear eye opening at 10 Gb/s were successfully achieved over a long distance using an 11.4-km HF transmission line for the first time. To upgrade the present photonic network system, we believe the technologies of the demonstrated T-band PDM, together with WDM photonic transport systems using the >10-km long HF transmission line, represent a pioneering breakthrough in the use of ultra-broadband optical frequency resources.