Exploració per autor "Lerín de la Santísima Trinidad, Adolfo"

Ara es mostren els items 1-12 de 12

    • 1.25-3.125 Gb/s per user PON with RSOA as phase modulator for statistical wavelength ONU 

      Chu, Guangyong; Polo Querol, Víctor; Lerín de la Santísima Trinidad, Adolfo; Tabares Giraldo, Jeison; Cano Valadéz, Iván Nicolás; Prat Gomà, Josep Joan (2015-12-15)
      Article
      Accés obert
      We report a new scheme to support, cost efficiently, ultra-dense wavelength division multiplexing (UDWDM) for optical access networks. As validating experiment, we apply phase modulation of a reflective semiconductor optical ...

    • 6.25Gb/s differential duobinary transmission in 2GHz BW limited direct phase modulated DFB for udWDM-PONs 

      Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Presi, Marco; Polo Querol, Víctor; Ciaramella, Ernesto; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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      Accés restringit per política de l'editorial
      A differential duobinary codification is proposed for directly phase modulating a 2GHz BW equalized DFB laser. The method was tested with homodyne coherent detection achieving 6.25Gb/s bitrate transmission with -38.5dBm ...

    • DFB laser reallocation by thermal wavelength control for statistical udWDM in PONs 

      Polo Querol, Víctor; Borotau Bosser, Pau; Lerín de la Santísima Trinidad, Adolfo; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We demonstrate a simple fast method of laser wavelength channel switching for the wavelength management of UDWDM-PONs where the ONUs have source wavelengths with random distribution and are controlled with limited thermal ...

    • Direct phase modulation DFBs for cost-effective ONU transmitter in udWDM PONs 

      Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Polo Querol, Víctor; Prat Gomà, Josep Joan (2014-05-15)
      Article
      Accés restringit per política de l'editorial
      A technique for direct phase modulating a low-cost distributed feedback laser is presented for user transmitter in ultra dense wavelength division multiplexing passive optical networks. It consists of a simple RC network, ...

    • Direct phase modulation of a DFB laser for udWDM-PON 

      Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Polo Querol, Víctor; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The response of a DFB was equalized with a simple RC network for modulating directly its phase and producing a BPSK signal. The system was tested with a heterodyne coherent detector at 1.25 Gb/s and 2.5 Gb/s showing a ...

    • DQPSK directly phase modulated DFB for flexible coherent UDWDM-PONs 

      Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Prat Gomà, Josep Joan (2015-09-15)
      Article
      Accés obert
      A bandwidth-limited distributed feedback laser directly phase modulated with a 5-Gb/s differential quadrature phase shift keying (DQPSK) signal is demonstrated in a statistical ultra-dense wavelength division multiplexing ...

    • Experimental demonstration of Flex-Grid udWDM with 6.25GHz full-duplex frequency slots for metro/access & data centers 

      Altabas, Jose Antonio; Izquierdo, David; Sotelo, F; Garcés, I; Lázaro Villa, José Antonio; Lerín de la Santísima Trinidad, Adolfo; Spadaro, Salvatore; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      Flex-Grid 6.25GHz full-duplex frequency slots are proposed for Metro/Access & Data-Center Networks allocating: 1Gbps Nyquist-DPSK over MZM for OLT/DC-ONU downlinks and OLT/DC up-downlinks; 1Gbps NRZ-DPSK over directly ...

    • Exploiting RSOA for uplink transmission with coherent detection for low cost UDWDM-PON 

      Chu, Guangyong; Lerín de la Santísima Trinidad, Adolfo; Cano Valadéz, Iván Nicolás; Polo Querol, Víctor; Tabares Giraldo, Jeison; Prat Gomà, Josep Joan (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Upstream phase modulation exploiting low cost reflective semiconductor optical amplifier (RSOA) at ONU is applied for simplified coherent detection through DFBs as local lasers at ONU and at OLT.

    • Optimizing reflective semiconductor optical amplifier as phase modulator for low cost colorless ONU with 3x3 homodyne detection 

      Chu, Guangyong; Polo Querol, Víctor; Lerín de la Santísima Trinidad, Adolfo; Cano Valadéz, Iván Nicolás; Prat Gomà, Josep Joan (2014)
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      Accés restringit per política de l'editorial
      Overcome the limited modulation bandwidth of low cost uncooled To-can packaged RSOA (~400 MHz) and operate it at 3.125 Gb/s using homodyne techniques with the optimal performance for phase modulation via measured characteristics.

    • Polarization independent single-PD coherent ONU receiver with centralized scrambling in udWDM-PONs 

      Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Polo Querol, Víctor; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A centralized polarization scrambling and single-PD coherent ONU Rx system is proposed and tested with two Tx and direct-phase modulated DFBs. Polarization independence at the Rx, and a sensitivity at BER=10-3 of ×45dBm ...

    • Simplified polarization diversity heterodyne receiver for 1.25Gb/s cost-effective udWDM-PON 

      Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Polo Querol, Víctor; Prat Gomà, Josep Joan (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We propose a heterodyne receiver with a single-photodiode per polarization for ONU receiver in low-cost udWDM-PON. This grants polarization diversity operation showing a penalty of 6dB in sensitivity compared to a balanced ...

    • Survey of Faster-Than-Nyquist for Flexible Passive Optical Networks 

      Altabas, Jose Antonio; Arribas, Paula; Izquierdo, David; Sotelo, Félix; Lerín de la Santísima Trinidad, Adolfo; Fàbrega, Josep Maria; Lázaro Villa, José Antonio; Garces, Ignacio; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The constant growing in traffic demands has driven to look for new methods with which to reduce the occupied bandwidth and efficient use of the optical spectrum. Despite non-orthogonal signalling lead to intersymbolic ...