Accession Number : ADA334102

Title :   High Linearity Modulation in Quantum Wells for Analog Fiber Optic Links.

Descriptive Note : Final rept. Aug 93-Feb 97,

Corporate Author : CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s) : Yu, Paul K. ; Kellner, A. L. ; Welstand, Robert B.

PDF Url : ADA334102

Report Date : OCT 1997

Pagination or Media Count : 45

Abstract : For many RF photonic applications, low RF insertion loss, large spurious free dynamic range (SH)R) 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 (2/3), and a single octave SH)R of 124 dB-Hz (4/5). 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 InGaP/InAsP 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.

Descriptors :   *OPTICAL PROPERTIES, *QUANTUM WELLS, *LINEARITY, *ANALOG SYSTEMS, *MODULATORS, HIGH POWER, FUNCTIONS, DEGRADATION, DEMONSTRATIONS, QUANTUM THEORY, EFFICIENCY, WAVEGUIDES, SEMICONDUCTORS, REGIONS, LOW LOSS, FIBER OPTICS TRANSMISSION LINES, PHOTONS, POWER, CONFINEMENT(GENERAL), ABSORPTION, PHOTODETECTORS, MODULATION, DATA LINKS, INSERTION LOSS, RADIOFREQUENCY.

Subject Categories : Electrical and Electronic Equipment
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE