公开(公告)号：EP0046351A1

公开(公告)日：1982-02-24

申请号：EP81303568.0

申请日：1981-08-05

申请人： THE POST OFFICE

发明人： Hensel, Paul Christopher ,  Hooper, Raymond Charles

IPC分类号： H04B9/00 ,  H04Q11/04

CPC分类号： H04Q11/04 ,  H04B10/2504

摘要： An electronic telephone exchange of the type employing time-space-time switching, has an optical fibre data link connecting the space (3) and time switches (2,4). In order to meet the design requirements for use in a telephone exchange, the fibre optic link has to have fairly well defined performance parameters. In particular the overall diameters of the optical fibres (16) employed in the optical fibre link lies between 180 and 250 microns, preferably 200 microns, and the core diameter of the optical fibres (16) lies in the range 0.6 to 0.95 of the cladding diameter. Preferably the core diameter lies in the range 160 to 180 microns. The optical fibre link is characterised by the numerical aperture of the fibre, insertion loss of the fibre, sensitivity and dynamic range of the receiver (19) and the power output and extinction ratio of the transmitter (13).

公开(公告)号：EP0016575A1

公开(公告)日：1980-10-01

申请号：EP80300659.2

申请日：1980-03-05

申请人： THE POST OFFICE

发明人： Hensel, Paul Christopher ,  Gillings, Geoffrey William

IPC分类号： G02B7/26 ,  G02B5/172

CPC分类号： G02B6/3841 ,  G02B6/3873

摘要： In a dielectric optical waveguide device two optical fibres (2) to be coupled end-to-end are respectively located within a cluster of straight rigid elements (1). The meeting ends (4) of the elements are tapered to provide docking ramps which ensure precise axial alignment of the clusters.

摘要翻译： 在电介质光波导器件中，要端对端耦合的两根光纤（2）分别位于直刚性元件（1）的簇内。 元件的会议端（4）是锥形的，以提供对接斜坡，其确保簇的精确轴向对准。

公开(公告)号：EP0016575B1

公开(公告)日：1982-02-17

申请号：EP80300659.2

申请日：1980-03-05

申请人： THE POST OFFICE

发明人： Hensel, Paul Christopher ,  Gillings, Geoffrey William

IPC分类号： G02B7/26 ,  G02B5/172

CPC分类号： G02B6/3841 ,  G02B6/3873