High-efficiency 1.3 mu m InAsP-GaInP MQW electroabsorption waveguide modulators for microwave fiber-optic links

High-efficiency electroabsorption waveguide modulators have been designed and fabricated using strain-compensated InAsP-GaInP multiple quantum wells at 1.32-mu m wavelength, A typical 200-mu m-long modulator exhibits a fiber-to-fiber optical insertion loss of 9 dB and an optical saturation intensity larger than 10 mW, The 3-dB electrical bandwidth is in excess of 20 GHz with a 50-Omega load termination, When used in an analog microwave fiber-optic link without amplification, a RF link efficiency as high as -38 dB Is achieved at 10 mW input optical carrier power, These analog link characteristics are the first reported using MQW electroabsorption waveguide modulators at 1.32 mu m.