Photonic Generation of Millimeter-Wave Signals With Tunable Phase Shift | Zendy

Weifeng Zhang | Zendy; Jianping Yao | Zendy

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Photonic Generation of Millimeter-Wave Signals With Tunable Phase Shift

Author(s) -

Weifeng Zhang,

Jianping Yao

Publication year - 2012

Publication title -

ieee photonics journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.725

H-Index - 73

eISSN - 1943-0655

pISSN - 1943-0647

DOI - 10.1109/jphot.2012.2199481

Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics

A novel photonic approach to generating a frequency-quadrupled millimeter-wave (mm-wave) signal with a tunable phase shift is proposed and demonstrated. Two second-order optical sidebands are generated by using a Mach-Zehnder modulator (MZM) that is biased at the maximum transmission point and an optical notch filter. A polarization-maintaining fiber Bragg grating (PM-FBG) is then utilized to make the two sidebands orthogonally polarized, which are then sent to a polarization modulator (PolM). By aligning the two orthogonally polarized sidebands with the two principal axes of the PolM, complementary phase modulation is thus achieved. By beating the two phase-modulated sidebands at a photodetector, an mm-wave signal is generated and its phase is continuously tunable by tuning the bias voltage to the PolM. An experiment is performed. An mm-wave signal with a frequency tunable from 36 to 52 GHz is generated and its phase is tunable over 360 ^° by tuning the bias voltage.

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