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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 12 — Jun. 15, 2014
  • pp: 3504–3507

Self-calibrating measurement of high-speed electro-optic phase modulators based on two-tone modulation

Shangjian Zhang, Heng Wang, Xinhai Zou, Yali Zhang, Rongguo Lu, and Yong Liu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 12, pp. 3504-3507 (2014)
http://dx.doi.org/10.1364/OL.39.003504


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Abstract

We propose a self-calibrating method for high-frequency response measurement of electro-optic phase modulators based on two-tone modulation. The method utilizes the electrical domain measurement of heterodyning spectrum between the two-tone modulation optical signal and the frequency-shifted optical carrier, and eliminates the need to correct the responsivity fluctuation in the photodetection. High-frequency modulation depth and half-wave voltages are measured and compared to those with the traditional optical spectrum analysis method in the experimental demonstration. The proposed method enables calibration-free and accurate frequency response measurement of electro-optic phase modulators by using high-resolution electrical spectrum analysis.

© 2014 Optical Society of America

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(230.2090) Optical devices : Electro-optical devices
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 7, 2014
Revised Manuscript: May 1, 2014
Manuscript Accepted: May 4, 2014
Published: June 6, 2014

Citation
Shangjian Zhang, Heng Wang, Xinhai Zou, Yali Zhang, Rongguo Lu, and Yong Liu, "Self-calibrating measurement of high-speed electro-optic phase modulators based on two-tone modulation," Opt. Lett. 39, 3504-3507 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-12-3504

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