GaAs optical waveguide structures at 10.6-microm wavelength.
A comparison of GaAs/n(+)GaAs, GaAs/GaAsP, and GaAs/AlGaAs waveguide structures is presented. Their fabrication processes and their transmission properties at 10.6-microm wavelength are described. The loss due to the free carrier absorption of the substrate is analyzed. Experimentally, an attenuation rate of 2 dB/cm in a single mode (~7 microm) GaAs/GaAsp waveguide with a maximum dimension of the order of 7 cm has been achieved.
Chang
M S
MS
Chang
W S
WS
Sopori
B L
BL
Vann
H R
HR
Muller
M W
MW
Craford
M G
MG
Finn
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D
Groves
W O
WO
Herzog
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AH