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Electro-optical branching device and method of manufacturing the same

  • US 4,103,154 A
  • Filed: 01/26/1977
  • Issued: 07/25/1978
  • Est. Priority Date: 01/27/1976
  • Status: Expired due to Term
First Claim
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1. An electro-optical branching device for picking up a fraction of optical radiation and converting the latter into an electrical signal, said device comprising a casing, a single optical fibre comprising an inner core and an outer cladding and having two ends, said outer cladding comprising a lateral opening, said casing surrounding said fibre and forming around said two ends mechanical connecting ferrules for connection to complementary ferrules, said device further comprising a photodetector element placed in said casing, said element having a sensitive area facing said opening and being fixed to said core through said opening by a sealing material to transmit said fraction of optical radiation;

  • the refractive index of said sealing material being at least equal to that of said cladding.

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