21:I[432972,["/_next/static/chunks/bb923814e1f4d2e9.js","/_next/static/chunks/dd3ee9f5b7716ca6.js","/_next/static/chunks/4204a0ae82542ca8.js","/_next/static/chunks/1270dead247da766.js","/_next/static/chunks/6e1aa89a642f40be.js","/_next/static/chunks/2d7aa753e81324a8.js","/_next/static/chunks/8ffd0b71567920d8.js","/_next/static/chunks/67ea6dfd21f16c5f.js","/_next/static/chunks/24eb4379f68013fd.js","/_next/static/chunks/b8cd775ffdf935bd.js","/_next/static/chunks/983103cd9eb7b428.js","/_next/static/chunks/263f2cdcb9aa2341.js","/_next/static/chunks/294b9525248c8e5f.js"],"default"] 22:T505,We experimentally demonstrated the application in ultrahigh spectral density long-haul optical systems of tight prefiltering to generate “quasi-Nyquist wavelength division multiplexing” signals together with the use of pure-silica core fiber and hybrid Raman/erbium-doped fiber amplification. The transmission of polarization-multiplexed quadrature-amplitude modulation with 8 symbols (PM-8QAM) at 138 Gb/s and channel spacing equal to 1.22 $\,\times\,$ (symbol rate) was demonstrated, reaching over 4000 km at net spectral efficiency (SE) of 4.1 b/s/Hz. In our experiment, we achieved to date highest per-carrier symbol rate (23 Gbaud), SE (4.1 b/s/Hz), and (SE) $\,\times\,$ (distance) product (16655 b/s/Hz $\cdot$ km) for non-orthogonal frequency-division multiplexing transmission using PM-8QAM modulation.

#	Concept	H-Index	Publications	Citations
1	Engineering	1	1	22
2	Fiber Optics	1	1	22
3	Optical Communication	1	1	22
4	Optical Materials	1	1	22
5	Optical Systems	1	1	22

	Year	Citations

About

Top Concepts