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EP0048640A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Device for separating two light signals emitted by two sources of different wavelengths and transmitted by the same optical fibre, and receiver comprising such a device

Assignee: Lignes Telegraphiques et Telephoniques LTT SA
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Filing: 1981-08-14
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Granted: —
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Expires: 2001-08-14
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Abstract

Abstract Translated from French Le dispositif de séparation comporte une fibre optique (1) se terminant par deux parties de fibre en dérivation (1a, 1b) dont l'une (1a) comporte un prolongement prédéterminé (2), deux photodétecteurs (P1, P2) disposés respectivement en sortie dudit prolongement et de l'autre partie de fibre en dérivation (1b), des moyens à retard (10) connectés à la sortie du photodétecteur (P2), des moyens de différenciation recevant les signaux engendrés par les moyens à retard (10) et ceux détectés par le photodétecteur (P1), et un circuit électronique de traitement (30) connecté à la sortie du différenciateur (20). Le dispositif de séparation selon l'invention s'applique aux systèmes de transmission sur fibre optique. The separation device comprises an optical fiber (1) ending in two parts of shunt fiber (1a, 1b), one of which (1a) has a predetermined extension (2), two photodetectors (P1, P2) arranged respectively in output of said extension and of the other branched fiber part (1b), delay means (10) connected to the output of the photodetector (P2), differentiation means receiving the signals generated by the delay means (10) and those detected by the photodetector (P1), and an electronic processing circuit (30) connected to the output of the differentiator (20). The separation device according to the invention applies to optical fiber transmission systems.

Inventors

  • 👤 Michel Eve
  • 👤 Bernard Floch

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 17:50
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2861; G02B6/293; G02B6/29379; G02B6/2938; G02B6/42; G02B6/4201; G02B6/4246; H; H04; H04B; H04B10/00; H04B10/60; H04B10/66; H04B10/69

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

EP0009534A1 Cited

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