Title :
Analysis of frequency quadrupling using a single LN intensity modulator and a faraday mirror based bidirectional polarization rotator for millimeter wave generation
Author :
Min Zhu ; Xiaoguang Zhang ; Lixia Xi ; Wenbo Zhang ; Xianfeng Tang
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
We proposed a novel scheme for frequency quadrupling using a Sagnac loop employing polarization manipulation and a single travelling-wave LN intensity modulator (IM) depending on the velocity mismatch phenomenon. The bidirectional Faraday rotator (BFR) is equivalent to a TE-TM modes converter incorporated in the loop, which is composed of circular connected optical circulators and 90° Faraday mirrors. The undesired sideband is suppressed by properly control the state of polarization (SOP) and the modulation index of the IM. A frequency quadrupled microwave signal is generated with an unwanted harmonic suppression ratio of 27.5 dB.
Keywords :
light polarisation; microwave photonics; millimetre wave generation; mirrors; optical circulators; optical harmonic generation; optical modulation; BFR; Faraday mirror; IM; Sagnac loop; TE-TM modes; bidirectional Faraday rotator; bidirectional polarization rotator; circular connected optical circulators; frequency quadrupled microwave signal; frequency quadrupling; harmonic suppression ratio; millimeter wave generation; modulation index; polarization manipulation; polarization state control; single single travelling-wave LN intensity modulator; velocity mismatch phenomenon; Frequency modulation; Integrated optics; Microwave communication; Microwave photonics; Optical modulation; Optical polarization; carrier suppression; frequency quadrupling; frequency upconversion; microwave photonics;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2015 14th International Conference on
Conference_Location :
Nanjing
DOI :
10.1109/ICOCN.2015.7203638
