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

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 20期

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

页码：1985 / 1988

页数：4

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