Browsing by Author "Sánchez Pena, José Manuel"

Now showing items 1-11 of 11

    • Applications of recirculating optical configurations on filters and lasers 

      Vázquez, Carmen; montalvo, Julio; Vargas, Salvador; Corredera, Pedro; Sánchez Pena, José Manuel (07/07/2005)
      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 (09/01/2004)
      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 (04/20/2000)
      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 (06/01/2004)
      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 ...

    • Measurements on passive tunable optical filters for DWDM 

      Vázquez, Carmen; Vargas, Salvador; Sánchez Pena, José Manuel; Corredera, Pedro (06/06/2002)
      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 ...

    • Novel tunable optical filter employing a fiber loop mirror for synthesis applications in WDM 

      Vargas, Salvador; Vázquez, Carmen; Sánchez Pena, José Manuel (11/12/2001)
      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 ...

    • 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 (09/04/2003)
      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 (06/09/2004)
      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 (08/01/2005)
      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 ...

    • 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 (09/01/2004)
      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. ...

    • Wide tunable filters using a recirculating delay line with multi-reflections 

      Vargas, Salvador; Vázquez, Carmen; Sánchez Pena, José Manuel (05/01/2002)
      A ring resonator with multiple reflections as a tunable filter is proposed and analyzed in this paper. A coupler and two identical Bragg gratings are used to implement the internal reflections so an active filter with a ...