Widely tunable and integrated optical system and method
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United States of America Patent
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Dec 2, 2003
Grant Date -
Oct 31, 2002
app pub date -
Feb 20, 2002
filing date -
Feb 20, 2001
priority date (Note) -
Expired
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Abstract
The present invention provides tunable optical system, and a method for forming the same, that exhibits a broader tuning range with fewer components than prior art tunable optical systems. The tunable optical system of the present invention includes a plurality of wavelength routers, each having a different optical channel resolution, optically coupled to a plurality of optical amplifier arrays. The free spectral range of each of the second and subsequent wavelength routers is equal to a total bandwidth of one of its respective grating orders. The system is tuned by selectively activating optical amplifiers in each of the optical amplifier arrays. The tunable optical system of the present invention can be used to make tunable semiconductor emitters, receivers and filters.
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