TFPS Telcordia Qualification.pdf - GigOptix.com
TFPS Telcordia Qualification.pdf - GigOptix.com
TFPS Telcordia Qualification.pdf - GigOptix.com
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Modulation Effects and Materials<br />
Electro‐Optic Effect<br />
Free Carrier Plasma<br />
Dispersion Effect<br />
LiNbO3 EO Polymers InP, GaAs<br />
2 2<br />
1<br />
e N P<br />
3<br />
n n r E<br />
n<br />
(<br />
)( )<br />
e ij<br />
2 2<br />
2<br />
8<br />
c <br />
0n<br />
me m h<br />
• Modulation speed is determined by velocity mismatch<br />
• Modulation speed is determined by<br />
and RF loss.<br />
how fast the free carriers can be<br />
• Optical refractive index changes under the electrical injected or removed, by the velocity<br />
field for electro-optic materials with non-<br />
mismatch, and RF loss.<br />
centrosymmetric structure.<br />
• Refractive index is a function of<br />
wavelength.<br />
Polarization<br />
Ph 3 SiO<br />
Ph 3 SiO<br />
Electron<br />
donor<br />
N<br />
Bridge<br />
O<br />
S<br />
O<br />
NC<br />
F 3 C<br />
Electron<br />
acceptor<br />
NC<br />
Electron flow direction<br />
O<br />
CN<br />
9<br />
<strong>GigOptix</strong> Inc CONFIDENTIAL - 2011
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