TY - JOUR
T1 - Dynamic electrooptic frequency shifter for pulsed light signals
AU - Farías, Darío A.
AU - Eckstein, James N.
N1 - Funding Information:
Manuscript received May 14, 2004; revised August 25, 2004. This work was supported in part by the National Science Foundation under Grant NSF EIA00-81437 D. Farias was with the University of Illinois at Urbana–Champaign, Urbana, IL 61801 USA. He is now with the Portland Technology Development Group, Intel Corporation, Hillsboro, OR 97124 USA (e-mail: [email protected]).
PY - 2005/1
Y1 - 2005/1
N2 - In this paper, we report continuous frequency shifting of a train of mode-locked pulses of light by up to ±400 GHz using electrooptic frequency shifting (EOFS). Dynamic, continuous, and accurate shifting of the optical pulses is achieved by controlling the phase and power of a single frequency microwave signal in a traveling wave phase modulator structure. Operation of the device under different microwave power and optical pulse length settings was investigated in order to study spectral distortion predicted to occur at high levels of frequency shifting and when using long pulses. Possible techniques for future device improvement were proposed and preliminary tests were performed. The use of a second-harmonic component of the microwave drive signal leads to a longer region of constant amplitude gradient and results in reduced distortion.
AB - In this paper, we report continuous frequency shifting of a train of mode-locked pulses of light by up to ±400 GHz using electrooptic frequency shifting (EOFS). Dynamic, continuous, and accurate shifting of the optical pulses is achieved by controlling the phase and power of a single frequency microwave signal in a traveling wave phase modulator structure. Operation of the device under different microwave power and optical pulse length settings was investigated in order to study spectral distortion predicted to occur at high levels of frequency shifting and when using long pulses. Possible techniques for future device improvement were proposed and preliminary tests were performed. The use of a second-harmonic component of the microwave drive signal leads to a longer region of constant amplitude gradient and results in reduced distortion.
KW - Electrooptic devices
KW - Electrooptic frequency shifter (EOFS)
KW - Lithium niobate
KW - Nonlinear optics
KW - Optical frequency conversion
KW - Optical planar waveguide components
KW - Traveling-wave devices
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U2 - 10.1109/JQE.2004.837954
DO - 10.1109/JQE.2004.837954
M3 - Article
AN - SCOPUS:12844266216
SN - 0018-9197
VL - 41
SP - 94
EP - 99
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 1
ER -