H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/12 (2006.01) G02B 6/28 (2006.01) H04B 10/135 (2006.01)
Patent
CA 2057311
The invention relates to a transmission system for the polarisation-insensitive transmission of signals over a signal path between a transmitter and a receiver, provided with high-order retarder. The retarder is a combination of a polarisation-splitting coupling and a loop-type delaying transmission route. The retarder may be sited at the receiver end, with a suitably chosen angle between one of the principle axes of the retarder and the polarisation of a local oscillator incorporated in the receiver. Advantages are reduction in size and number of components in the retarder, reduction in the number of retarders in such a transmission system and an increase of the capacity for integration.
Fetherstonhaugh & Co.
Koninklijke Kpn N.v.
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