Optical receptacle, ferrule, and plug ferrule
First Claim
1. A ferrule for being optically connected to one other member via an optical receptacle into which the ferrule may be inserted and removed, the ferrule comprising:
- an optical fiber which conducts light, anda foreign matter movement suppressor provided in an end surface of the ferrule which suppresses movement of foreign matter due to inserting and removing the ferrule, whereinthe end surface is polished into a convex spherical configuration on an end thereof which extends from a tapered outer circumferential portion of the ferrule and is configured to be to be connected to the one other member,the foreign matter movement suppressor suppressing movement of foreign matter moving-from an outer circumferential portion of the ferrule toward a central portion of the end surface,the foreign matter movement suppressor including a recess provided in the end of the end surface having the convex spherical configuration, the recess extending in a circumferential configuration,an arithmetic average roughness of an inner surface of the recess being not less than 0.8 micrometers and not more than 3.2 micrometers.
1 Assignment
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Accused Products
Abstract
According to an aspect of the invention, an optical receptacle, comprising: a fiber stub including a ferrule containing an optical fiber conducting light; a holder holding the fiber stub; and a sleeve, one end of the sleeve being capable of holding a tip of the fiber stub, one other end of the sleeve being capable of holding a plug ferrule inserted into the optical receptacle, the ferrule including a foreign matter movement suppressor in an end surface of the ferrule, the end surface being polished into a convex spherical configuration on a side to be connected to the plug ferrule, the foreign matter movement suppressor suppressing movement of foreign matter moving, due to inserting and removing the plug ferrule, from an outer circumferential portion of the ferrule toward a central portion of the end surface. It is possible to prevent the loss occurring due to the foreign matter at the outer circumferential portion of the fiber stub moving to the central portion of the end surface of the ferrule when repeatedly inserting and removing the plug ferrule into and from the optical receptacle; and it is possible to reduce the Wiggle loss by maintaining the length where the sleeve holds the fiber stub.
40 Citations
9 Claims
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1. A ferrule for being optically connected to one other member via an optical receptacle into which the ferrule may be inserted and removed, the ferrule comprising:
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an optical fiber which conducts light, and a foreign matter movement suppressor provided in an end surface of the ferrule which suppresses movement of foreign matter due to inserting and removing the ferrule, wherein the end surface is polished into a convex spherical configuration on an end thereof which extends from a tapered outer circumferential portion of the ferrule and is configured to be to be connected to the one other member, the foreign matter movement suppressor suppressing movement of foreign matter moving-from an outer circumferential portion of the ferrule toward a central portion of the end surface, the foreign matter movement suppressor including a recess provided in the end of the end surface having the convex spherical configuration, the recess extending in a circumferential configuration, an arithmetic average roughness of an inner surface of the recess being not less than 0.8 micrometers and not more than 3.2 micrometers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification
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- Resources
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Current AssigneeToto Limited
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Original AssigneeToto Limited
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InventorsKondo, Sho, Agatsuma, Hirotsugu, Hakozaki, Satoshi, Kaneyuki, Satoshi
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Primary Examiner(s)Kianni, Kaveh C
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Application NumberUS14/900,376Publication NumberTime in Patent Office1,229 DaysField of Search385 60US Class CurrentCPC Class CodesG02B 6/262 Optical details of coupling...G02B 6/3825 with an intermediate part, ...G02B 6/3846 with fibre stubsG02B 6/3847 with means preventing fibre...G02B 6/3863 fabricated by using polishi...G02B 6/3866 Devices, tools or methods f...G02B 6/3874 using tubes, sleeves to ali...
