Optical module and method of forming the optical module

Details Optical module and method of forming the optical module Optical module and method of forming the optical module

G - Physics

02

B

G02B 6/34 (2006.01) G02B 6/32 (2006.01) G02B 6/42 (2006.01)

Patent

CA 2405646

An object beam divided by a light division means 12 is caused to enter an optical fiber 23 and the object beam emitted from the optical fiber 23 is then caused to enter a photo-refractive polymer layer 6. On the other hand, a reference beam divided by the light division means 12 is irradiated on the photo-refractive polymer layer 6 from the opposite side. In this manner, the object beam is superimposed on the reference beam in the photo-refractive polymer layer 6 to form an interference pattern or fringe corresponding to the strength of the light intensity. The interference pattern is recorded on the photo-refractive polymer layer 6 as a diffraction grating 4. This diffraction grating 4 exhibits a specific characteristic to emit the object beam emitted from the optical fiber 23 in the direction of the reference beam, namely parallel to an optical axis of the optical fiber 23.

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