| 摘要 |
<p>PURPOSE:To reduce connection loss as compared with an error in an end-surface gap, by making the connection end surface of an optical fiber into a plane end surface slanting at a desired angle to an optical axis, and forming a wedge- shaped gap between both end surface. CONSTITUTION:A couple of optical fibers 3 and 3' to be connected are held and fixed on the same axial line by collars 5 and 5', a sleeve 7 having screws 7a and 7a' at external circumferences of both end parts, and hollow nuts 9 and 9' having internal screws 9a and 9a'. Further, the circumferential relative positions of the butt end surfaces 5a and 5a' of the collars 5 and 5' are held constant to the sleeve 7 with positioning keys 11 and 11. The opposite end surfaces 3a and 3a' of the optical fibers 3 and 3' are made into plane end surfaces having a prescribed angle phi to optical axes together with the end surfaces 5a and 5a' of the collars, and a wedge-shaped gap is provided between the opposite end surfaces. Consequently, interference fringes are formed on the fiber end surfaces and the width of variation in the quantity of transmitted light with the end surface gap is reduced.</p> |
