Xu Jing, Peucheret Christophe, Lyngsø Jens Kristian, Leick Lasse
DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, DK-2800 Kgs Lyngby, Denmark.
Opt Express. 2012 May 21;20(11):12449-56. doi: 10.1364/OE.20.012449.
Current technologies are fast approaching the capacity limit of single mode fibers (SMFs). Hollow-core photonic bandgap fibers (HC-PBGFs) are expected to provide attractive long-term solutions in terms of ultra-low fiber nonlinearities associated with the possibility of mode scaling, thus enabling mode division multiplexing (MDM). In this work, we demonstrate MDM over a HC-PBGF for the first time. Two 10.7 Gbps channels are simultaneously transmitted over two modes of a 30-m long 7-cell HC-PBGF. Bit error ratio (BER) performances below the FEC threshold limit (3.3 × 10(-3)) are shown for both data channels when the two modes are transmitted simultaneously. No power penalty and up to 3 dB power penalty at a BER of 10(-9) are measured for single mode transmission using the fundamental and the LP(11) mode, respectively. The performance of this exploratory demonstration is expected to improve significantly if advanced mode launching and detection methods are used.
当前技术正迅速接近单模光纤（SMF）的容量极限。空芯光子带隙光纤（HC-PBGF）有望在与模式缩放可能性相关的超低光纤非线性方面提供有吸引力的长期解决方案，从而实现模式分割复用（MDM）。在这项工作中，我们首次展示了在HC-PBGF上的MDM。两个10.7 Gbps通道同时在一根30米长的7芯HC-PBGF的两种模式上传输。当两种模式同时传输时，两个数据通道的误码率（BER）性能均低于前向纠错（FEC）阈值极限（3.3×10⁻³）。对于分别使用基模和LP(11)模的单模传输，在误码率为10⁻⁹时，未测量到功率代价以及高达3 dB的功率代价。如果使用先进的模式发射和检测方法，预计这一探索性演示的性能将显著提高。
