Optical connector arrangement comprising a converter

• US 7,427,164 B2
• Filed: 06/02/2005
• Issued: 09/23/2008
• Est. Priority Date: 06/02/2004
• Status: Expired due to Fees

• Current Assignee: Molex Incorporated
• Original Assignee: Molex Incorporated
• Inventors: Schempp, Otto
• Primary Examiner(s): Healy; Brian
• Assistant Examiner(s): LAM, HUNG Q
• Application Number:
  US11/628,186
• Publication Number:
  US 20070237461A1
• Time in Patent Office: 1,209 Days
• Field of Search: 385 53- 94, 398 22- 24, 398/139, 398/141
• US Class Current: 385/53
• CPC Class Codes: G02B 6/421 the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
• CPC Class Codes: G02B 6/4246 Bidirectionally operating package structures
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements

Abstract

The invention relates to an optical connector arrangement wherein the connector and the converter are connected by short plastic fiber sections. The aim of the invention is to provide one such connector arrangement which can be produced in a simple and cost-effective manner, can be easily and economically mounted on a circuit carrier and reliably and efficiently soldered to the conductors thereof, enables a modular assembly, and is at least partially heat-resistant during the assembly in such a way that, for example, a vibration-resistant reflow soldering can be carried out. To this end, the fiber sections are connected to a double ferrule which is fixed to the converters by means of a clamp. A false cover can be used for the transport and soldering.

Claims

1. An optical connector assembly for establishing signal connections comprising:

an optical connector to be connected to a complementary mating connector,

a component assembly spaced from said optical connector and including at least one first electrooptical/optoelectrical transducer and one second electroopitcal/optoelectrical transducer,

at least a first optical fiber length and a second optical fiber length, each having a first end connected to said optical connector and a second end connected to a respective one of said first and second transducers, wherein a first optical signal connection is established by said first fiber length between said optical connector and said first transducer, and a second optical signal connection is established by said second fiber length between said optical connector and said second transducer, when said first and second fiber lengths are connected to said first and second transducers, respectively on the one hand, and to said optical connector on the other hand,

at least one fixing means for detachable attaching both of said fiber lengths to said component assembly, and

an integrally formed double ferrule common fiber carrier for holding both fiber lengths between said optical connector and said spaced component assembly and permanently fixing said second ends of said first and second fiber lengths,

wherein by cooperation of said fixing means with said common fiber carrier both of said fiber lengths are releasably secured to said component assembly.

2. The optical connector assembly of claim 1, wherein said fixing means is in a form of a single attachment means for detachably attaching said common fiber carrier onto said component assembly.

3. The optical connector assembly of claim 1, wherein said common fiber carrier includes a pin projecting from a rear face thereof offset vertically with respect to a connecting line between the two optical fiber lengths for receipt within an opening formed in a surrounding housing of said component group.

4. The optical connector assembly of claim 1, wherein said common fiber carrier is one of bonded or welded or unitarily overmolded to both of said fiber lengths.

7. The optical connector assembly of claim 1, wherein said fixing means is in the form of a resilient clip having a front leg, a rear leg and a joining portion.

8. The optical connector assembly of claim 7, wherein said clip has a substantially U-shaped cross section so as to encompass said transducers and said common fiber carrier, and to bias said second ends of said fiber lengths towards both of said transducers.

9. The optical connector assembly of claim 8, wherein both of said transducers are disposed within a common enclosure and wherein said clip, in a mounted condition thereof, is in engagement with said enclosure.

10. The optical connector assembly of claim 7, wherein said clip comprises at least one front leg, a first rear leg portion and a second rear leg portion laterally separated by an intervening slot, and an upper joining portion joining said front leg with said pair of rear leg portions.

11. The optical connector assembly of claim 10, wherein a common enclosure is provided for housing said transducers and has an opening for passing said rear legs which directly engage said transducers.

12. The optical connector assembly of claim 7, wherein said front leg, in a mounted condition thereof, engages said common fiber carrier.

13. The optical connector assembly of claim 12, wherein said fiber carrier includes a guiding groove in said body portion provided between said fiber lengths which is bounded by two side walls and is adapted for insertion of said front leg of said clip.

14. The optical connector assembly of claim 13, wherein said guiding groove and said front leg comprise a common taper.

15. The optical connector assembly of claim 7, wherein said clip is unitarily stamped and formed from sheet metal.

16. The optical connector assembly of claim 7, wherein said clip and said fiber carrier comprise complementary interengaging latching means.

5. An optical connector assembly for establishing signal connections comprising:

an optical connector to be connected to a complementary mating connector,

a component assembly spaced from said optical connector and including at least one first electrooptical/optoelectrical transducer and one second electrooptical/optoelectrical transducer,

at least a first optical fiber length and a second optical fiber length, each having a first end connected to said optical connector and a second end conneted to a respective one of said first and second transducers, wherein a first optical signal connection is established by said first fiber length between said optical connector and said first transducer, and a second optical signal connection is established by said second fiber length between said optical connector and said second transducer, when said first and second fiber lengths are connected to said first and second transducers, respectively, on the one hand, and to said optical connector on the other hand,

at least one fixing means for detachable attaching both of said fiber lengths to said component assembly, and

a common fiber carrier for holding both fiber lengths between said optical connector and said spaced component assembly and fixing said second ends of said fiber lengths, said common fiber carrier comprising a first and a second ferrule portion encompassing said first and second fiber lengths, respectively, and a body portion having a front face for fixing said second ends of said fiber lengths and a rear face engaging said component assembly,

wherein by cooperation of said fixing means with said common fiber carrier both of said fiber lengths are releasably secured to said component assembly.

6. The optical connector assembly of claim 5, wherein said body portion is of a flat shape and defines a plane transverse with respect to said fiber lengths, and wherein said ferrule portions project from said front face and from said rear face of said body portion.

17. A method for assembling and soldering an optical connector assembly to a circuit board, the connector assembly including a first and a second electrooptical/optoelectrical transducer, an optical connector and a first optical fiber length and a second optical fiber length, and is for a spaced connection of said transducers to said connector, the method comprising the steps of:

providing said optical connector which is adapted to be connected to a complementary mating connector,

providing a component assembly mountable at a distance from said optical connector and including said first and second transducers which have first and second optical ports, respectively, and a plurality of solder contacts,

providing at least one fixing means,

providing a blank cover releasably secured to said component assembly by said fixing means such that said first and second optical ports are closed by said blank cover,

providing said first and second optical fiber lengths each having a first end to be connected to said optical connector and a second end to be connected to said first and second transducers, respectively, and having a common fiber carrier for both fiber lengths at each of the second ends thereof,

mounting said connector onto said circuit board,

mounting said assembly comprising said component assembly, said blank cover and said fixing means onto said circuit board and soldering said solder contacts to conductors on said circuit board,

detaching said fixing means and removing said blank cover,

connecting said first and second optical fiber lengths by their respective first ends to said optical connector on the one hand and by their respective second ends to said component assembly on the other hand, wherein a first optical signal connection between said optical connector and said first transducer by said first fiber length and a second optical signal connection between said optical connector and said second transducer by said second fiber length are established,

securing said common fiber carrier to said component assembly, and

securing said first and second optical fiber lengths to said optical connector.

18. The method of claim 17, wherein said optical connector is in a form of a hybrid connector having optical and electrical ports and including a plurality of electrical solder contacts that are soldered to the conductors on said circuit board in the same processing step as said solder contacts of said component assembly.

19. The method of claim 18, wherein soldering of said solder contacts is carried out by reflow soldering.

20. The method of claim 17, wherein said common fiber carrier is attached to said component assembly by that fixing means by means of which said blank cover was previously attached.

21. A mounting arrangement for assembling an optical connector assembly and for mounting and soldering same to a circuit board, comprising:

a component assembly including

a first and a second electrooptical/optoelectrical transducer being arranged within a common enclosure, and having first and second optical ports, respectively, and

a first and a second pig-tail for optically connecting said first and second transducers to an optical connector,

an optical connector which is mounted on a circuit board spaced from said component assembly,

a blank cover for covering and protecting said first and second optical ports, and clip means for releasably securing said blank cover to said component assembly.