Paper
1 November 2021 Amplified O-band direct-detection transmission using bismuth-doped fiber amplifiers
Yang Hong, Kyle R. H. Bottrill, Natsupa Taengnoi, Naresh K. Thipparapu, Yu Wang, Jayanta K. Sahu, David J. Richardson, Periklis Petropoulos
Author Affiliations +
Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 120572Y (2021) https://doi.org/10.1117/12.2606135
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China
Abstract
The recent emergence of bismuth-doped fiber amplifiers (BDFAs) enables the reach extension of high-speed O-band communication links. In this work, our recent efforts on amplified O-band direct-detection (DD) transmission using BDFAs are reviewed. We first present the performance of a four-channel O-band coarse wavelength-division multiplexed (CWDM) transmission over 50-km length of single-mode fiber (SMF), showing that the chromatic dispersion (CD) which has long been neglected in O-band transmission, will degrade the transmission performance of dispersive O-band channels. In this context, we quantify the relative benefits of different DD formats at 50 Gb/s over up to 70-km length of SMF in a BDFA pre-amplified O-band system. The considered formats include Nyquist on-off keying (OOK), Nyquist 4-ary pulse amplitude modulation (PAM4), and Kramers–Kronig (KK) detection assisted subcarrier modulation using quadrature phase-shift keying (QPSK), and they are evaluated over both the low CD 1320-nm wavelength and the more dispersive 1360-nm wavelength. It is demonstrated that OOK exhibits the best receiver sensitivity over all distances up to 70 km at the 1320-nm channel, whereas KK-QPSK achieves the optimal transmission performance at the 1360-nm wavelength when the reach is extended beyond 50 km. We consider that our results provide useful insights into possible future implementations of longer-reach O-band WDM systems.
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yang Hong, Kyle R. H. Bottrill, Natsupa Taengnoi, Naresh K. Thipparapu, Yu Wang, Jayanta K. Sahu, David J. Richardson, and Periklis Petropoulos "Amplified O-band direct-detection transmission using bismuth-doped fiber amplifiers", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 120572Y (1 November 2021); https://doi.org/10.1117/12.2606135
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KEYWORDS
Fiber amplifiers

Optical amplifiers

Coarse wavelength division multiplexing

Double sideband modulation

Modulation

Single sideband modulation

Semiconductor optical amplifiers

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