As the modulation bandwidth of a traveling wave modulator is increased, the velocities of the microwave and the lightwave need to be taken into consideration. Velocity mismatch of 20 percent or greater can occur in a III-V modulator and this will result in a bandwidth of approximately 22 GHz-cm or less for an electrical loss of 1 dB/GHz sq rt/cm. To improve the bandwidth of the modulator to greater than 40 GHz, velocity mismatch would have to be reduced to within 10 percent. A new velocity matched III-V modulator is presented.
Velocity-matched III-V travelling wave electro-optic modulator
High-Frequency Analog Fiber Optic Systems ; 1990 ; San Jose,United States
Proc. SPIE ; 1371
1991-02-01
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Modelling and design of a travelling-wave electro-optic modulator on InP
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