High Linearity Modulation in Quantum Wells for Analog Fiber Optic Links.
Final rept. Aug 93-Feb 97,
CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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For many RF photonic applications, low RF insertion loss, large spurious free dynamic range SHR links are needed. This development program demonstrated a high saturation power 46 mW, high RF efficiency -17.8 dB analog semiconductor waveguide modulator based upon Franz-Keldysh Effect FKE modulation. This was achieved with 43 mW optical power incident to the modulator. The modulator was operated with a multi-octave SFDR of 106 dB-Hz 23, and a single octave SHR of 124 dB-Hz 45. Also introduced is a novel, dual function operation concept for the semiconductor electroabsorption modulator for operating also as an effective photodetector. The photodetector can handle more than 20 mA of photocurrent. The behavior of a waveguide modulator based upon FKE and Quantum Confined Stark Effect to achieve high linearity modulation was also modeled and documented. A first time demonstration of high quality, strain compensated multiple quantum well InGaPInAsP materials was accomplished. Up to one micrometer thick strained multiple quantum well regions can be grown without degradation in the optical properties of the materials.
- *OPTICAL PROPERTIES
- *QUANTUM WELLS
- *ANALOG SYSTEMS
- HIGH POWER
- QUANTUM THEORY
- LOW LOSS
- FIBER OPTICS TRANSMISSION LINES
- DATA LINKS
- INSERTION LOSS
- Electrical and Electronic Equipment
- Fiber Optics and Integrated Optics