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Digital broadband linearization of optical links |
Optics Letters, Vol. 38, Issue 4, pp. 446-448 (2013)
http://dx.doi.org/10.1364/OL.38.000446
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Abstract
We present a digital postprocessing linearization technique to efficiently suppress dynamic distortions added to a wideband signal in an analog optical link. Our technique achieves up to 35 dB suppression of intermodulation distortions over multiple octaves of signal bandwidth. In contrast to conventional linearization methods, it does not require excessive analog bandwidth for performing digital correction. This is made possible by regenerating undesired distortions from the captured output, and subtracting it from the distorted digitized signal. Moreover, we experimentally demonstrate a record spurious-free dynamic range of
© 2013 Optical Society of America
OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.5625) Fiber optics and optical communications : Radio frequency photonics
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: October 8, 2012
Revised Manuscript: January 4, 2013
Manuscript Accepted: January 10, 2013
Published: February 8, 2013
Citation
Daniel Lam, Ali M. Fard, Brandon Buckley, and Bahram Jalali, "Digital broadband linearization of optical links," Opt. Lett. 38, 446-448 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-4-446
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