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Simultaneous suppression of IMD2 and IMD3 in analog electroabsorption modulation
Author(s) -
Sohn SungIl,
Han SangKook
Publication year - 2001
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.1182
Subject(s) - spurious free dynamic range , modulation (music) , microwave , optoelectronics , voltage , materials science , optics , optical power , physics , electrical engineering , telecommunications , engineering , laser , acoustics , cmos
A linearized optical modulation scheme using a dual parallel electroabsorption modulator (EAM) and an RF 180° hybrid junction is proposed. The IMD2 generated by each EAM is suppressed by controlling the dc bias voltage of the EAM, and the IMD3 is suppressed by having a proper input optical power split ratio and an RF 180° hybrid junction. Reductions of both the IMD2 and the IMD3 at the same operation voltage were achieved, and a subsequent SFDR enhancement of 29 dB was obtained. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 29: 373–376, 2001.