EP0315131A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device for coupling single-mode optical fibres
Assignee: OTC Optical Technologies Center SRL
•
Filing: 1988-11-02
•
Granted: —
•
Expires: 2008-11-02
Abstract
Abstract A device for coupling single-mode optical fibres (F₁, F₂), wherein the light radiation outside the fibres is transmitted through a collimated optical beam, obtained by a two-lens array (O₁, O₂) facing the fibre ends. Optical coupling is obtained by translating a third lens (L) and by rotating a small plate glass (V) placed between collimating lenses.
Inventors
- 👤 Francesco Caviglia
- 👤 Piergiorgio Ricaldone
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4206; G02B6/26; G02B6/262; G02B6/264; G02B6/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A device for coupling single-mode optical fibres through a collimated beam, wherein the light radiation outgoing from a first optical fibre (F1) is collimated by a frist lens (01), and the collimated beam is focused by a second lens (02) on the end face of a second fibre (F2), characterized in that between said flrst and second lenses (01, 02) there are inserted: - a plate glass (V) with plane and parallel surfaces and apt to be rotated around two perpendicular axes belonging to a plane perpendicular to the device optical axis, which is the straight line traversing the centres of said first and second collimating lenses (01, 02); - a lens (L), apt to be translated in a plane perpendicular to the optical axis above according to two orthogonal directions.
Claim 2
Independent Claim
131 words
A device for coupling single-mode optical fibres through a collimated beam, wherein the light radiation outgoing from a first optical fibre (F1) is collimated by a frist lens (01), and the collimated beam is focused by a second lens (02) on the end face of a second fibre (F2), characterized in that between said flrst and second lenses (01, 02) there are inserted: - a plate glass (V) with plane and parallel surfaces and apt to be rotated around two perpendicular axes belonging to a plane perpendicular to the device optical axis, which is the straight line traversing the centres of said first and second collimating lenses (01, 02); - a lens (L), apt to be translated in a plane perpendicular to the optical axis above according to two orthogonal directions.
Claim 3
Dependent Claim
82 words
A device as in the prior art portion of claim 1, characterized in that between said first and second collimating lenses (01, 02) there is inserted a lens (L), apt to be rotated around two perpendicular axes belonging to a plane perpendicular to the device optical axis, which is the straight line traversing the centres of said first and second collimating lenses (01, 02), and to be translated in a plane perpendicular to the above optical axis according to two orthogonal directions.
Claim 4
Dependent Claim
38 words
A device as in claim 1 or 2, characterized in that the lens (L) and/or the plate glass (V) are held by supports made of a material easy to bend and twist to obtain the optimal coupling condition.
Claim 5
Dependent Claim
32 words
A device as in claim 1 or 2, characterized in that the lens (L) and/or the plate glass (V) are positioned by mobile supports outside the device and afterwards fastened by adhesives.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.