Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2005-09-27
2005-09-27
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S028000, C385S039000
Reexamination Certificate
active
06950576
ABSTRACT:
A mode coupling device is provided for coupling co-propagating modes in an optical waveguide to provide a gain flattening filter for use with an optical amplifier such as an erbium-doped fiber amplifier. The mode coupling device includes a plurality of long period grating sections having equal spatial periods, with adjacent grating sections separated by an interval of less than 10 periods in length. Also provided is a method for manufacturing the mode coupling device, including a method for determining the parameters of the device and a method for fine tuning the device to provide a loss spectrum closely matching the output spectrum of the optical amplifier. The mode coupling device is useful for flattening the gain of the optical amplifier.
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Grubsky Victor E.
Starodubov Dmitry S.
Font Frank G.
Fulwider Patton Lee & Utecht LLP
Mooney Michael P.
Sabeus Photonics, Inc.
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