[ii] Patent Number: 5,257,334  Date of Patent: Oct. 26,1993
FOREIGN PATENT DOCUMENTS
0425426 5/1991 European Pat. Off. . WO91/11703 8/1991 PCT Int'l Appl. .
Yamamoto et al., "A Large-Tolerant Single-Mode Optical Fiber Coupler .. . ", Proc. of IEEE, Jun. 1976, pp. 1013-1014.
Kobayashi et al., "Optical Demultiplexer Using Coupling ...," Applied Optics, vol. 17, No. 20, Oct. 1978, pp. 3253-3258.
Primary Examiner—Brian Healy
Assistant Examiner—Phan Thi Heartney
Attorney, Agent, or Firm—Spencer, Frank & Schneider
On an optical connector plug main body 3 whose transverse section is a trapezoid, a groove 6 of rectangular transverse section is provided, at a bottom of which a plurality of alignment V grooves 7 are formed. In a plate member 9 of rectangular transverse section has a receiving groove 10 of also rectangular transverse section, the groove 10 being connected with the bottom of the plate member 9. An alignment sleeve 12 has an alignment groove 14 of wedge head shape. The plate member 9 is engaged with the groove 6 of the connector plug main body 3, and protrusions 11 of the plate member 9 is ultrasonic bonded into recesses 8 provided in the connector plug main body 3. A ribbon type optical fiber to which an adhesive is applied is inserted from the groove 6 to complete the connector plug. Thus assembled connector plugs are inserted in the state whose ends are faced with each other into the groove 14 of the alignment sleeve 12 to make the connection of the ribbon type optical fiber.
3 Claims, 6 Drawing Sheets