Patent ID: 7021842

Claim:
An optical fiber array comprising: an optical fiber formed by splicing dissimilar optical fibers having different mode field diameters, the optical fiber having a fiber coating portion in which a fiber coating is applied and a bare fiber portion in which the fiber coating is removed, the bare fiber portion having a spliced portion of the dissimilar optical fibers in the middle; an array substrate for mounting the optical fiber thereon, the array substrate having a fiber aligning portion and a base portion, the fiber aligning portion having a groove for positioning the bare fiber portion of the optical fiber, the base portion where the bare fiber portion extending from the fiber aligning portion and part of the fiber coating portion are disposed; a pressure member for pressing the bare fiber portion to the groove of the array substrate; and a first adhesive for fixing the bare fiber portion to the groove of the array substrate, wherein the spliced portion is disposed on the base portion of the array substrate.