JP2003043294A5 - - Google Patents

Claims (10)

First and second optical waveguides;
A mode conversion device comprising: a GRIN fiber lens attached to both the first and second optical waveguides.   2. The apparatus of claim 1, wherein the first and second waveguides are bonded to the GRIN fiber lens by melt bonding or adhesive.   3. The apparatus of claim 2, wherein the first and second waveguides are first and second optical fibers, respectively.   4. The apparatus of claim 3, wherein the first optical fiber has a propagation mode having a different size than the second optical fiber. First, second and third optical fibers;
First, second, and third GRIN fiber lenses connected to the first, second, and third optical fibers, respectively.
An apparatus comprising: an optical element configured to be optically coupled to the first, second, and third optical fibers. A MEM device;
The apparatus according to claim 5, wherein the optical element is a movable reflector whose position and direction are controlled by a MEM device.   6. The apparatus of claim 5, wherein the optical element includes any one of an optical circulator, a polarization selective splitter, and a wavelength selective reflector. An array of at least three optical fibers with attached GRIN fiber lenses;
And an optical device configured to direct light between one of the GRIN fiber lenses of the array and another optical waveguide.   9. The apparatus of claim 8, wherein the another waveguide is an optical fiber having a fiber GRIN lens attached thereto. The optical device is configured to display an acceptance window as light from one of a plurality of optical fibers;
The apparatus of claim 9, wherein a diameter of the acceptance window does not exceed a diameter of one of the plurality of optical fibers.