Analysis of linearity of highly saturated electroabsorption modulator link due to photocurrent feedback effect
Optics Express, Vol. 15, Issue 14, pp. 8713-8718 (2007)
http://dx.doi.org/10.1364/OE.15.008713
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Abstract
We have analyzed the linearity performance of analog fiber-optic links based on electroabsorption modulators (EAM) operating at high optical power. The negative feedback caused by photocurrent generation improves the modulator linearity in the gain saturation regime. In the absence of laser relative intensity noise (RIN), the link spur-free dynamic range (SFDR) increases with the power of four-thirds of the input optical power after gain saturation occurs. A multi-octave SFDR of more than 135 dB/Hz2/3 has been found to be achievable with sufficiently high power.
© 2007 Optical Society of America
OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(130.5990) Integrated optics : Semiconductors
(250.7360) Optoelectronics : Waveguide modulators
(350.4010) Other areas of optics : Microwaves
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: April 26, 2007
Revised Manuscript: June 21, 2007
Manuscript Accepted: June 25, 2007
Published: June 27, 2007
Citation
X. B. Xie, I. Shubin, W. S. C. Chang, and P. K. L. Yu, "Analysis of linearity of highly saturated electroabsorption modulator link due to photocurrent feedback effect," Opt. Express 15, 8713-8718 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-14-8713
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References
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