Linearity enhancement of electroabsorption optical modulator by absorption variation in propagation direction

Lee, Young Moo; Han, Sang Kook

doi:10.1002/(sici)1098-2760(19990705)22:1<30::aid-mop8>3.0.co;2-3

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Much effort has been focused on linearizing the EAM transfer curve. The developed techniques include electronic predistortion [7], distortion emulation and reversal [8], feed-forward compensation [9], RF current modulation [10], exploitation of the wavelength dependence of the quantum-confined Stark shift [11], dual-EAM approach [12], tailoring of the absorption coefficient along the propagation direction [13], and linearly combining the Franz-Keldysh and quantum-confined Stark effects [14], but these techniques cannot simultaneously suppress laser RIN or common ASE noise.…”

Section: Introductionmentioning

confidence: 99%

Experimental demonstration of a balanced electroabsorption modulated microwave photonic link

Mathai¹,

Cappelluti

Jung

et al. 2001

IEEE Trans. Microwave Theory Techn.

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A novel balanced electroabsorption modulated photonic link for simultaneous suppression of even-order distortions, third-order distortions, laser relative intensity noise (RIN), and common amplified spontaneous emission noise at the same modulator bias point was experimentally demonstrated for the first time. By biasing the balanced electroabsorption modulator at the thirdorder null, the third-order distortions were suppressed, while the balanced link architecture suppressed all even-order distortions and common mode noises. The fabricated balanced electroabsorption modulator (B-EAM) showed well-matched dc characteristics in terms of-and transfer curve. System experiments were performed to compare Single-EAM and BEAM links. In the BEAM link, 2-dB suppression of laser RIN and 20-dB improvement in spurious free dynamic range over the single-EAM link were observed.

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