1.25–2.5 Gb/s simple nyquist transmitters for coherent UDWDM-PON with enhanced spectral efficiency
| العنوان: | 1.25–2.5 Gb/s simple nyquist transmitters for coherent UDWDM-PON with enhanced spectral efficiency |
|---|---|
| المؤلفون: | J. Camilo Velasquez, Jeison Tabares, Josep Prat, Ivan N. Cano |
| المساهمون: | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. GCO - Grup de Comunicacions Òptiques |
| المصدر: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Sistemes de comunicació per làser, Laser communication systems, Gaussian, Beat (acoustics), 02 engineering and technology, Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica [Àrees temàtiques de la UPC], Passive optical network, law.invention, symbols.namesake, 020210 optoelectronics & photonics, Optics, law, Coherent detection, Wavelength-division multiplexing, 0202 electrical engineering, electronic engineering, information engineering, Nyquist–Shannon sampling theorem, Physics, Enginyeria electrònica::Optoelectrònica::Làser [Àrees temàtiques de la UPC], business.industry, Transmitter, Multiplexatge per divisió de freqüència, Spectral efficiency, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Beat phase modulation, Directly modulated laser (DML), DFB, Wavelength division multiplexing, symbols, Nyquist shaping, business, UDWDM-PON |
| الوصف: | We present a coherent ultra-dense wavelength division multiplexing passive optical network (UDWDM-PON) with enhanced spectral efficiency. The benefit of using Gaussian or Nyquist pulse-shaping filters at the transmitter is evaluated through numerical simulations and experiments. The transmitters consist of directly phase modulated distributed feedback (DFB) lasers through beat signals whose duty-cycle and amplitude are digitally adjusted. The results show that transmitting a Nyquist-shaped signal achieves a 25% spectral saving allowing to place 2.5 Gb/s/user data in 6.25 GHz channels. Furthermore, the proposed transmitter tolerates differential link-losses of 15 dB at Rx sensitivity of ¿44 dBm at BER=10¿3 with intradyne detection. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef8dfc02cdfa62ac77b12367b704f701 http://hdl.handle.net/2117/121476 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....ef8dfc02cdfa62ac77b12367b704f701 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |