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1. WO2002025339 - OPTICAL FIBER COUPLER ASSEMBLY

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

What is claimed is :

1. A device, comprising:
a light source to produce a light beam;
a fiber coupler module having coupling optics and a fiber, said coupling optics positioned to couple said light beam into said fiber;
a support module having a first part to mount said light source and a second part with a support platform over which said fiber coupler module is
positioned in optical alignment with said light source, said support platform having a top surface facing said fiber coupler module and first and second opposing side surfaces substantially parallel to an optical path of said light beam;
first and second vertical elongated engagement members having first distal ends affixed to said first side surface to space from each other and second distal ends affixed to said fiber coupler module;
a third vertical elongated engagement member having a first distal end affixed to said second side surface in a position between positions of said first and second vertical elongated engagement members along said optical path of said light beam, said third vertical elongated engagement member having a second distal end affixed to said fiber coupler module;

a first horizontal engagement member having a first part engaged to said fiber coupler module and a second part elongated in a direction nominally
perpendicular to said first and second side surfaces and engaged to said support platform at a first location close to said first side surface; and
a second horizontal engagement member having a first part engaged to said fiber coupler module at a location different from said first horizontal engagement member, and having a second part elongated in a direction nominally parallel to said second elongated part of said first horizontal engagement member and engaged to said support platform at a second location close to said second side surface.

2. The device as in claim 1, wherein each engagement member is slightly deflected to apply a pressure towards said fiber coupler module.

3. The device as in claim 1, wherein said fiber coupler module includes a housing and said coupling optics is directly engaged to a surface of said housing.

4. The device as in claim 3, wherein said housing includes a cylindrical through channel to transmit said light beam and to position said coupling optics and said fiber.

5. The device as in claim 4, wherein said fiber coupler module includes a fiber fitting unit to engage said fiber to said housing.

6. The device as in claim 1, wherein said coupling optics includes a first lens to receive said light beam from said light source and a second lens to focus said light beam into said fiber.

7. The device as in claim 5, wherein said coupling optics further includes an optical isolator positioned between said first and said second lenses to prevent light from traveling towards said light source.

8. The device as in claim 1, wherein said first and said second side surfaces form an angle so that two different planes defined by said first and said second side surfaces intercept on a side of said top surface where said fiber coupler module is located.

9. A device, comprising:
a platform having a top surface, and first and second side surfaces parallel to each other to intercept with said top surface at two opposing ends of said top surface;
a nominally cylindrical member positioned on said support surface and orientated with a cylindrical axis substantially parallel to said first and said second side surfaces;
first and second vertical elongated engagement members having first distal ends affixed to said first side surface to space from each other and second distal ends affixed to a first side of said cylindrical member;
a third vertical elongated engagement member having a first distal end affixed to said second side surface in a position between positions of said first and second vertical elongated engagement members along said cylindrical axis, said third vertical elongated
engagement member having a second distal end affixed to a second, opposite side of said cylindrical member;
a first horizontal engagement member having a first part engaged to said cylindrical member and a second part elongated in a direction substantially perpendicular to said cylindrical axis and engaged to said support surface at a first location close to said first side surface; and
a second horizontal engagement member having a first part engaged to said cylindrical member at a location different from said first horizontal engagement member, and having a second part elongated in a direction substantially parallel to said second elongated part of said first horizontal engagement member and engaged to said support platform at a second location close to said second side surface.

10. The device as in claim 9, wherein each of said first, said second, and said third vertical elongated engagement members is slightly deflected to apply a pressure towards said cylindrical member.

11. The device as in claim 9, wherein said platform includes a first standoff part adjacent to said first side surface and above said top surface to provide said first location for engaging said first horizontal engagement member to said platform, and a second standoff part adjacent to said second side surface and above said top surface to provide said second location for engaging said second horizontal engagement member to said
platform.

12. The device as in claim 11, wherein each of said first and second horizontal engagement members is deflected to exert a force against said cylindrical member to suspend said cylindrical member above said top surface.

13. A method for engaging a cylindrical member above a platform at a fixed position, comprising:
affixing first and second vertical elongated bands on a first side surface of the platform at two different locations so that the vertical elongated bands are either vertical to or form an acute angle with respect to a top surface of the platform;
affixing a third vertical elongated band on a second side surface opposing the first side surface at a location between the first and the second vertical elongated bands;
placing the cylindrical member above the top surface between the first and the second side surfaces to respectively affix to the first, the second vertical elongated bands and the third vertical elongated band so that a cylindrical axis of the cylindrical member is substantially parallel to the first and the second side surfaces;
affixing a first end of a first horizontal elongated band to a first location on the cylindrical member and a second end near the first side surface; and affixing a second end of a second horizontal elongated band to a second location on the cylindrical member and a second end near the second side surface, the second location is displaced from the first location along the cylindrical axis.

14. The method as in claim 13, wherein the first and the second horizontal elongated bands are deflected to apply forces against the cylindrical member away from the top surface.

15. The method as in claim 13, wherein the first, second, and third vertical elongated members are
deflected to apply pressure against the cylindrical member .

16. The method as in claim 13, wherein the
cylindrical member includes a through hole along the cylindrical axis, and further comprising directly engaging optical elements in the through hole without using optical mounts.