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Optoelectronic RF signal mixing using an electroabsorption waveguide as an integrated photodetector/mixer

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7 Author(s)
Shin, D.S. ; Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA ; Li, G.L. ; Sun, C.K. ; Pappert, S.A.
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We demonstrate for the first time an electroabsorption (EA) waveguide utilized as an integrated photodetector/mixer for frequency conversion of radio frequency signals, through field-controlled absorption. Using an InAsP-GaInP multiple-quantum-well EA waveguide, a conversion loss of 18.9 dB was obtained at 10-mW optical local oscillator (LO) power, and a suboctave, two-tone spur-free dynamic range of 120.0 dB-Hz/sup 4/5/ was measured for an up-converted signal at 1.9 GHz. This scheme can be useful in antenna applications where optical LO signal distribution is used for frequency converting microwave signals.

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Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 2 )