Fabrication of a Low-Loss Fused Fiber Spatial-Mode Coupler for Few-Mode Transmission

被引:36
作者
Li, An [1 ]
Ye, Jia [2 ]
Chen, Xi [1 ]
Shieh, William [1 ]
机构
[1] Univ Melbourne, Dept Elect & Elect Engn, Melbourne, Vic 3010, Australia
[2] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Ctr Informat Photon & Commun, Chengdu 610031, Peoples R China
关键词
Optical fiber couplers; few-mode fiber; space-division-multiplexing; optical fiber communication; DIVISION MULTIPLEXED TRANSMISSION; 2-MODE FIBER; MULTIMODE; NETWORKS; CAPACITY; LIMITS;
D O I
10.1109/LPT.2013.2280792
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Spatial-mode couplers (SMCs) are critical devices for mode-division-multiplexed (MDM) systems. In this letter, we report a low-loss symmetric SMC fabricated with custom-designed two-mode fiber and commercially available standard fused biconical taper station. Sophisticated hydrofluoric etching or pre-pulling on the fiber sample is not needed for fabrication. We characterize the performance of the fabricated SMC, which shows a low loss of 1.1-2 dB and high modal extinction ratio of >= 20 dB for a broad wavelength range from 1539 to 1555 nm. We demonstrate transmission of 69.2-Gb/s LP01/LP11 dual-mode MDM coherent optical orthogonal-frequency division multiplexing signal over 4.5-km two-mode fiber using the fabricated SMC as mode multiplexer. The signal is successfully received at low (0.1/0.5 dB) optical signal-to-noise ratio penalty, and the estimated channel matrix confirms that there is very low modal crosstalk in both the SMC and the fiber.
引用
收藏
页码:1985 / 1988
页数:4
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