Optical selector and an optical link including the selector

Details Optical selector and an optical link including the selector Optical selector and an optical link including the selector

1994-11-17

1997-08-05

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Switch

385 17, 385 15, 359128, 359154, G02B 626

Patent

active

056550375

ABSTRACT:
Selection switches (C1, . . . , C3-4) enable an optical path (BC, C1, C2-1, C3-1, D1, B1) to be selected from a plurality of such paths predefined on a common substrate (PE), each of the switches belonging to a plurality of such paths for that purpose. Isolation switches (D1, . . . , DN) each belong to one such path only. The isolation switches are disposed at the ends of the paths so as to enable the selected path to be isolated from optical members (LEN) that are outside the selector and that are connected to the non-selected paths. In this way crosstalk is avoided. The invention applies in particular to backing up an optical link.

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Patent Abstracts of Japan, vol. 17, No. 351 (E-1392) 2 Jul. 1993 & JP-A-05 049 056 (Nippon Telegr. & Teleph. Corp.) 26 Feb. 1993.
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