| 摘要 |
PURPOSE: To increase a bit rate capacity of a single wavelength in an ultra long distance soliton transmission system by using combination of multiplexing through polarized light division and time division. CONSTITUTION: In the case of multiplexing from two channels of 2.5GHz into a single channel of 5GHz, an output of a single mode solid-state laser 201 that generates soliton pulses is given to a splitter 202, where the pulses are split into two soliton pulse streams having orthogonal polarization and the streams are given to modulators 205, 206, in which they are separately modulated by different information signals described to be DATA1, DATA2. Then the two soliton pulse streams are recombined in a splitter 210, but before that, one of the pulse streams is delayed by a half period of 2.5GHz in an adjustable delay line 209 so as to mutually insert the two pulse streams timewise. |
