Optical signal processing apparatus, has photodiode for converting optical signal to electrical signal that is input to resonant tunneling diode having quantum mechanical resonance effect to perform switching operation
摘要
<p>The apparatus has a photodiode for converting an optical signal to an electrical signal that is input to a resonant tunneling diode (5) for performing a switching operation. The tunneling diode has a quantum mechanical resonance effect. A digital signal is obtained by the switching operation. An electroabsorption (EA) optical modulator has its transmittance changed by the switching operation, and modulates and outputs light.</p>
