Now showing items 1-20 of 21

    • Applications of recirculating optical configurations on filters and lasers 

      Vázquez, Carmen; montalvo, Julio; Vargas, Salvador; Corredera, Pedro; Sánchez Pena, José Manuel (2005-07-07)
      In this paper, different optical configurations based on ring resonators and a reflective section in the feedback path, are proposed in order to show the feasibility of their applications in different fields. Additionally, ...
    • Demultiplexers for ultranarrow channel spacing based on Mach-Zehnders and ring resonators 

      Vázquez, Carmen; Vargas, Salvador; Sánchez Pena, José Manuel; Gonzalo, Ana Belen (2004-09-01)
      Novel demultiplexer configurations based on concatenated Mach-Zehnders and a ring resonator are presented. These new devices exhibit high channel isolation, flexibility, no loss, and megahertz-adjustable full width at half ...
    • Design and tolerance analysis of a router with an amplified resonator and Bragg gratings 

      Vargas, Salvador; Vázquez, Carmen; Sánchez Pena, José Manuel (2000-04-20)
      A novel ring resonator configuration with Bragg gratings is presented. The stability of this configuration is studied by a z-transform technique. A router design with a FWHM of 17 MHz, a -40-dB rejection ratio, and a 15-dB ...
    • Displays and Photonics Application Group Activities 

      Vázquez, Carmen; Sánchez Pena, José Manuel; Vargas, Salvador; Pérez, Isabel; Gonzalo, Ana Belen; montalvo, Julio (2004-06-01)
      Displays and Photonics Application Group (GDAF) is devoted to design and development of passive and active devices and sensors for their applications in WDM networks, CWDM, POF, and RF over fiber networks using different ...
    • Low power consumption silicon photonics tuning filters based on compound microring resonators 

      Vargas, Salvador; Vázquez, Carmen (2013-03-14)
      Scalable integrated optics platforms based on silicon-on-insulator allow to develop optics and electronics functions on the same chip. Developments in this area are fostered by its potential as an I/O technology that can ...
    • Measurements on passive tunable optical filters for DWDM 

      Vázquez, Carmen; Vargas, Salvador; Sánchez Pena, José Manuel; Corredera, Pedro (2002-06-06)
      Measurements on a passive optical fibre tunable filter are presented. The device is based on a loop mirror in a ring resonator. The loop mirror allows tuning by changing the coupling coefficient of a coupler. The novel ...
    • Multi-sensor system using plastic optical fibers for intrinsically safe level measurements 

      Vargas, Salvador; montalvo, Julio; Gonzalo, Ana; Vázquez, Carmen (2004-10-04)
      A system for measuring liquid level in multiple tanks using optical fiber technology has been developed. Oil field service industry or any sector requiring liquid level measurements in flammable atmospheres can be benefited ...
    • New optical filter employing multireflection mirror to provide design flexibility for WDMA 

      Vargas, Salvador; Vázquez, Carmen (2000)
      A novel optical device employing an amplified ring resonator and a multireflecting mirror inside, is presented. Is founded its transfer function. Also simple expressions for the separation of the two maximums of this novel ...
    • Novel tunable optical filter employing a fiber loop mirror for synthesis applications in WDM 

      Vargas, Salvador; Vázquez, Carmen; Sánchez Pena, José Manuel (2001-11-12)
      A novel optical filter employing a fiber loop mirror within an amplified ring resonator is presented. The fiber loop mirror allows tuning by changing the coupling factor of a coupler. The device can be used as a building ...
    • Novel tuneable filter based on MZ and an amplified ring resonator for OFDM networks 

      Vargas, Salvador; Vázquez, Carmen (1999-11-08)
      A novel reconfigurable fibre based tuneable filter is proposed. The module relies on a cascaded connection of Mach-Zehnders and an amplified fibre ring resonator. MHz range adjustable FHWM bandwidths and high crosstalk are ...
    • Optical reconfigurable demultiplexer based on Bragg grating assisted ring resonators 

      Vargas, Salvador; Vázquez, Carmen (2014-08-11)
      A polarization independent reconfigurable optical demultiplexer with low crosstalk between adjacent channels and high number of potential allocated channels is designed on silicon on insulator technology. On to off state ...
    • Optical router for optical fiber sensor networks based on a liquid crystal cell 

      Vargas, Salvador; Sánchez Pena, José Manuel; Vázquez, Carmen; Aranda, Angel; Pérez, Isabel (2003-09-04)
      Optical fiber sensor networks are evolving rapidly. They are used because of the inert nature of optical fibers allowing no electromagnetic interference and safe applications in inflammable atmospheres; other relevant ...
    • A plastic fiber optic liquid level sensor 

      Vargas, Salvador; Vázquez, Carmen; Gonzalo, Ana Belen; Sánchez Pena, José Manuel (2004-06-09)
      A system for measuring liquid level in multiple tanks using optical fiber technology has been developed. Oil field service industry or any sector requiring liquid level measurements in inflammable atmospheres can be benefited ...
    • Sagnac loop in ring resonators for tunable optical filters 

      Vargas, Salvador; Vázquez, Carmen; Sánchez Pena, José Manuel (2005-08-01)
      General filter architecture using co-and counterpropagation signals are studied. A specific configuration based on a Sagnac loop within a ring resonator is analyzed. Novel tuning, apart from conventional tuning,is achieved ...
    • Sistema Nefelometrico Auto-referenciado Inmune a Fuentes de Luz Externas 

      Vargas, Salvador; Calvo, Jossue (2018-02-11)
      Este trabajo describe los conceptos y procedimientos aplicados para el dise no e implementación de un sensor de turbiedad de agua. El mismo se dise na con la finalidad de brindarnos lecturas de turbiedad del agua. El sensor ...
    • Synthesis of optical filters using microring resonators with ultra-large FSR 

      Vargas, Salvador; Vázquez, Carmen (2010-12-06)
      We propose a novel synthesis method for designing flexible, tunable non-periodic filters. It is based on a building block which is presented by first time for these purposes, being the poles position tuned by means of a ...
    • Synthesis of Optical Filters Using Sagnac Interferometer in Ring Resonator 

      Vargas, Salvador; Vázquez, Carmen (2007-11-12)
      We propose a new synthesis method for the implementation of infinite impulse response filters, using a Sagnac interferometer within a ring resonator. This structure permits the synthesis of second-order optical functions ...
    • Synthesis of Optical Filters Using Sagnac Interferometer in Ring Resonator 

      Vargas, Salvador; Vásquez, Carmen (2010)
      We propose a novel synthesis method for designing flexible, tunable non-periodic filters. It is based on a building block which is presented by first time for these purposes, being the poles position tuned by means of a ...
    • Time Division Multiplexing Fibre-Optic Liquid Level Sensors using a Nematic 1x2 Optical Switch 

      Vázquez, Carmen; Vargas, Salvador; Santos, José Luis; Sánchez Pena, José Manuel; montalvo, Julio (2004-09-01)
      In this paper, time division multiplexing with optical switches in a multi-sensor system for level measurements with POF is reported. POF are used in the sensor heads and as transmission media along the optical network. ...
    • Tunable optical filters using compound ring resonators for DWDM 

      Vargas, Salvador; Vázquez, Carmen; Pena, José Manuel; Corredera, Pedro (2003-07-28)
      The device is based on a loop mirror in a ring resonator. The loop mirror allows tuning by changing the coupling coefficient of a directional coupler. The loop mirror is implemented using a Sagnac configuration to have the ...