Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2006-01-03
2006-01-03
Font, Frank G. (Department: 2881)
Optical waveguides
With optical coupler
Particular coupling function
C356S328000, C356S334000, C385S039000
Reexamination Certificate
active
06983090
ABSTRACT:
A high-resolution tunable optical filter uses a dispersive element in a double pass configuration. The double pass configuration is provided by a reflective quarter-wave plate that conveniently reduces polarization dispersion loss (PDL) of the filter. The filter also includes a fibre tube for supporting an input optical fibre and an output optical fibre, and a lens having an optical axis, which is disposed such that a focal point thereof is substantially at one of the input and output optical fibres. To provide increase resolution the filter is tuned by rotating the reflective quarter-wave plate. To provide high power capabilities the fibre jackets of the input and output fibres are optionally stripped back. To provide a symmetrical spectral response the fibre tube is optionally mounted at an angle to the optical axis of the lens.
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Weber John
Woodside Shane H.
Zhu Xiang
Font Frank G.
Hughes James P.
JDS Uniphase Inc.
MacLean Doug
Teitelbaum Neil
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