Direct-detection mode-division multiplexing enabled by phase retrieval

2016 ◽  
Author(s):  
Sercan O. Arik ◽  
Joseph M. Kahn
Keyword(s):  
Phase Retrieval ◽  
Direct Detection ◽  
Mode Division Multiplexing ◽  
Detection Mode

40 Gb/s High-speed mode-division multiplexing transmission employing NRZ modulation format

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Rabiu Imam Sabitu ◽  
Nafizah Goriman Khan ◽  
Amin Malekmohammadi
Keyword(s):  
System Performance ◽  
High Speed ◽  
Direct Detection ◽  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Threshold Power ◽  
Modulation Format ◽  
Transmission Distance ◽  
Mode Division Multiplexing ◽  
Speed Mode

AbstractThis report examines the performance of a high-speed MDM transmission system supporting four nondegenerate spatial modes at 10 Gb/s. The analysis adopts the NRZ modulation format to evaluate the system performance in terms of a minimum power required (PN) and the nonlinear threshold power (PTH) at a BER of 10−9. The receiver sensitivity, optical signal-to-noise ratio, and the maximum transmission distance were investigated using the direct detection by employing a multimode erbium-doped amplifier (MM-EDFA). It was found that by properly optimizing the MM-EDFA, the system performance can significantly be improved.

Performance of a Direct-Detection Spot Mode Division Multiplexing in Multimode Fiber

2019 ◽  
Vol 40 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Yousef Fazea ◽  
Mustafa Muwafak Alobaedy ◽  
Zeyid T. Ibraheem
Keyword(s):  
High Speed ◽  
Direct Detection ◽  
Cavity Surface ◽  
Multimode Fiber ◽  
Laser Array ◽  
Long Distance ◽  
Mode Division Multiplexing ◽  
Internet Users ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser

Abstract Multimode fiber (MMF) regarded as an excellent choice for providing large capacity and high-speed for applications such as data centers due to its adaptability and unwavering quality. The ceaseless development and the increase of Internet users that emphasis on increasing data capacity have promoted mode division multiplexing (MDM) as a promising contender for providing further level of multiplexing freedom by propagating several and dissimilar channels in different mode stream. This paper investigates and analyzes the effects of launching MDM spot mode with various vortex order using vertical-cavity surface-emitting laser array in conjunction with equalization scheme. A capacity of 40 Gbit/s transmitted over MMF long distance of 1500 m has been achieved at a wavelength of 1550.12 nm.

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