Optical structures with two optical guidance paths
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United States of America Patent
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Dec 23, 1997
Grant Date -
N/A
app pub date -
Jun 28, 1996
filing date -
Jul 4, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical structure having two optical guidance paths between which coupling occurs in a band about one predetermined wavelength is manufactured by providing an optical structure having two optical guidance paths with respective propagation constants 12', 14' which vary differently with wavelength and coincide at one given wavelength .lambda.' arranged such that coupling occurs between said optical guidance paths in a band about said one given wavelength and subjecting the or at least one of the guidance paths which includes a radiation responsive refractive index changing dopant to radiation to change the propagation constant thereof until said one given wavelength equals said one predetermined wavelength .lambda.'.
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