Method for aligning and fastening an optical fiber coupled to an opto-electronic component
View Patent ↗It is an object of the present invention to have a method for aligning the optical axis of an optical fiber with the optical axis of an opto-electronic component and for fastening the optical fiber into the resulting relative position in relation to the opto-electronic component. This method includes the following steps: a slot is cut into a base, an optical fiber is disposed within the slot so that it touches neither the sides nor the bottom, a solidifiable product is deposited onto the optical fiber, a limited polymerization area of the solidifiable product is defined near the opto-electronic component, one part of the solidifiable product is partially solidified so as to allow the optical fiber a limited range of movement, the optical fiber is moved so as to align its optical axis with the optical axis of the opto-electronic component, the solidifiable product is completely solidified so as to fasten the optical fiber within the slot.
1. A method for aligning the optical axis of an optical fiber with the optical axis of an opto-electronic component and for fastening the optical fiber into the resulting relative position in relation to the opto-electronic component, wherein
a slot is cut into a base,
an optical fiber is disposed within the slot so that it touches neither the sides nor the bottom,
a solidifiable product is deposited onto the optical fiber,
a limited polymerization area of the solidifiable product is defined near the opto-electronic component,
one part of the solidifiable product is partially solidified so as to allow the optical fiber a limited range of movement,
the optical fiber is moved so as to align its optical axis with the optical axis of the opto-electronic component,
the solidifiable product is completely solidified so as to fasten the optical fiber within the slot.
2. An aligning and fastening method according to claim 1 , wherein the solidifiable product contains a photopolymerizable monomer.
3. An aligning and fastening method according to claim 1 , wherein
a small quantity of the solidifiable product is deposited on an end portion of the optical fiber disposed within the slot,
the part of the solidifiable product thereby deposited is partially solidified so as to allow the optical fiber a limited range of movement,
once alignment is complete, the slot is filled with solidifiable product, and the product is completely solidified so as to fasten the optical fiber in the slot.
4. An aligning and fastening method according to claim 2 , wherein:
the slot is filled with solidifiable product,
a mask is deposited onto the solidifiable product,
the part of the solidifiable part that is not masked is partially solidified so as to allow the optical fiber a limited range of movement,
once alignment is complete, the mask is removed, and the solidifiable product is completely solidified so as to fasten the optical fiber in the slot.
5. An aligning and fastening method according to claim 1 , wherein the product is solidifiable under the action of ultraviolet radiation.
6. A device for aligning the optical axis of an optical fiber with the optical axis of an opto-electronic component and for fastening the optical fiber in the resulting relative position in relation to the opto-electronic component, for the implementation of the method according to one of the previous claims, the device comprising:
a slot; and
a groove being cut into a base, the groove being orthogonal to the slot and the depth of the groove being greater than that of the slot wherein a UV-transparent plate is placed on the base above the slot, once the optical fiber has been immersed in the solidifiable product.
7. A device according to claim 6 , wherein two grooves are additionally cut parallel to the slot, the grooves being respectively disposed on either side of the slot.