| 摘要 |
<p>An optical data transceiver 200 comprises: an integrated circuit 101 having implemented upon it first light sensing means 106, light emitting means 105 and second light sensing means 104. A gel blob 108 is provided on integrated circuit 101. Said gel blob 108 is substantially transparent and allows most of the light emitted by light emitting means 105 to pass through it into an optical fibre 207. In a similar manner most of the light emanating from optical fibre 207 may pass through the gel blob and be incident upon the second light sensing means 104. A proportion of the light emitted by light emitting means 105 is not passed through gel blob 108 but is instead reflected from the surface of gel blob 108 and is then incident upon the first light sensing means 106. The signal generated by the first light sensing means 106 is input to control means (not shown), typically implemented as part of integrated circuit 101. The control means monitors the output of the first light sensing means and controls the power output of the light emitting means 105 in response thereto. In this way, the power output of the light emitting means may be optimised without exceeding safe output levels.</p> |
