Abstract
This paper proposes new applications of a sinusoidally driven InGaAsP electroabsorption modulator to an inline optical gate for a 2R (reshape and retiming) repeater in optical amplifier systems, an n:1 optical demultiplexer in time division multiplexing systems, and an optical switching. Small polarization dependence of the modulator is essentially important for in-line use. By utilizing the monotonic increase of the extinction ratio with increasing the applied voltage, the electroabsorption modulator driven by large-signal sinusoidal voltage can produce a time domain square-shaped gate function with variable gate width. Furthermore, amplified spontaneous emission noise of optical amplifier systems can be reduced in both time and wavelength domains at off-state of the modulator, due to a noninterferometric wide wavelength operation of the modulator. Experimental results for a 2R repeater, an n:1 (n = 4, 8) optical demultiplexer, and optical gates for switching are also demonstrated for the first time at over 10-Gb/s repetition rate.
Original language | English |
---|---|
Pages (from-to) | 1912-1918 |
Number of pages | 7 |
Journal | Journal of Lightwave Technology |
Volume | 10 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1992 Dec |
Externally published | Yes |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics