AI Article Synopsis
- Mode-division multiplexing (MDM) and wavelength-division multiplexing (WDM) are effective methods to increase the capacity of fiber-optic systems, requiring amplification techniques like distributed Raman amplifiers (DRA) for signal light enhancement.
- This study showcases the successful transmission of 3 OAM modes and 9 WDM channels over a 104-km custom ring-core fiber using DRA to amplify the signals.
- The developed mode selective couplers efficiently (de)multiplex OAM modes, while the OAM-DRA achieves high and flat gain, crucial for maintaining performance over long distances in the communication spectrum.
Article Abstract
Mode-division multiplexing (MDM) and wavelength-division multiplexing (WDM) are regarded as effective solutions for enhancing the communication capacity of fiber-optic transmission systems. To extend the transmission distance, a suitable amplification technique is required to amplify the signal light, with distributed Raman amplifier (DRA) offering a high-flat gain. In this paper, we experimentally demonstrate the transmission of 3 orbital angular momentum (OAM) mode-division multiplexing and 9 wavelength-division multiplexing ranging from 1530 nm to 1610 nm over a 104-km self-designed ring-core fiber (RCF) with the assistance of DRA. The homemade all-fiber mode selective couplers (MSCs) can (de)multiplex OAM modes (OAM, OAM, OAM) efficiently in long-distance MDM + WDM fiber-optic transmission systems. The OAM-DRA provides high gain (with an on-off gain greater than 10 dB) as well as flat gain (with a differential wavelength gain of less than 0.88 dB and a differential mode gain of less than 0.28 dB) over the C + L band.
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| http://dx.doi.org/10.1364/OE.535286 | DOI Listing |
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