Wideband tunable optoelectronic oscillator based on a phase modulator and a tunable optical filter

Abstract

A widely tunable optoelectronic oscillator (OEO) based on a broadband phase modulator and a tunable optical bandpass filter is proposed and experimentally demonstrated. A tunable range from 4.74 to 38.38 GHz is realized by directly tuning the bandwidth of the optical bandpass filter. To the best of our knowledge, this is the widest fundamental frequency tunable range ever achieved by an OEO. The phase noise performance of the generated signal is also investigated. The single-sideband phase noise is below -120 dBc/Hz at an offset of 10 KHz within the whole tunable range.

A new modulation method to generate all-optical logic gates in an AOTF

“…toptica.com/products/terahertz_generation; Wake et al 1996;Fice et al 2012;Islam 2012;Bhatti et al 2000;Lima Júnior et al 2009;Ferreira et al 2012Ferreira et al , 2009Alvarado et al 1993;Novitsky 2013;Sobrinho et al 2002Sobrinho et al , 2008Tamai et al 2009;Huiszoon et al 2009;Onaka et al 2008;Veeriah et al 2007;Katrasnik et al 2010;Gupta et al 2012;Sabóia and Ferreira 2009;Mazzali and Fragnito 1998;Sobrinho and Sombra 2002;Tran 1997;Jung et al 2005;Yariv and Yeh 1984;Xu and Stroud 1992;Xie et al 2013;Sobrinho 2002;Song et al 2014;Mantsevich 2015). Information technology and high, medium or low capacity transmission systems can be potentially improved by the incorporation of all-optical devices.…”

“…The acousto-optic tunable filter (AOTF) has been considered as a strategic optical dispositive for optical communication due your compact size, high-speed switching and wideband wavelength selectivity (Onaka et al 2008;Veeriah et al 2007;Katrasnik et al 2010;Gupta et al 2012;Sabóia and Ferreira 2009;Sobrinho and Sombra 2002;Sobrinho et al 2002;Tran 1997;Jung et al 2005;Yariv and Yeh 1984;Xu and Stroud 1992;Xie et al 2013;Song et al 2014;Mantsevich et al 2015). An all-fiber tunable Mach-Zehnder interferometer based on an AOTF was demonstrated experimentally to have high performance .…”

A Wideband Tunable Optoelectronic Oscillator Based on a Spectral-Subtraction-Induced MPF

“…With the advantages of reconfigurability and wideband tunability, the microwave photonic filter (MPF) is a reasonable candidate to its electrical counterpart [3]. MPFs can be constructed by using a wavelength-dependent component such as a high-finesse Fabry-Perot etalon [4], [5], an injection-locked Fabry-Perot laser diode [6], or fiber Bragg gratings [7], [8], the frequency tuning of an OEO can then be realized by adjusting a variable optical delay line, changing the wavelength of light wave, or controlling a tunable optical filter (TOF) [14]. A transversal MPF, implemented by a sliced broadband optical source and a dispersive element, can also be used to perform frequency selection of OEO.…”

Widely Tunable Dual Loop Optoelectronic Oscillator based on a Single-Bandpass Microwave Photonic Filter and a Recirculating Delay Line

“…The tunability of the OEO is limited. To overcome the limitation of tunability, microwave photonic filter (MPF) was employed instead of electrical filter to sever as a mode selector [2][3][4]. However, the bandwidth of the bandpass MPF usually has hundreds of MHz which causes numerous modes to oscillate simultaneously.…”