1. An optical packet switching system comprising:
an optical packet switching device configured to route and output an input optical packet signal;
an optical amplifier device provided in a stage subsequent to the optical packet switching device; and
a noise superimposition device configured to superimpose noise on an optical packet signal prior to input to the optical amplifier device.
2. The optical packet switching system according to claim 1, wherein the noise superimposition device superimposes a noise component on an optical packet signal by inducing cross talk in the optical packet switching device.
3. The optical packet switching system according to claim 2, wherein the noise superimposition device controls the amount of cross talk based on bit error rate information detected by the light receiver device for receiving an optical packet signal from the optical amplifier device.
4. The optical packet switching system according to claim 3, wherein the noise superimposition device controls the amount of cross talk so that the bit error rate detected by the optical receiver device is equal to or lower than a predetermined threshold value.
5. The optical packet switching system according to claim 1, wherein the noise superimposition device superimposes ASE noise on an optical packet signal prior to input to the optical amplifier device.
6. The optical packet switching system according to claim 5, wherein the noise superimposition device controls the amount of ASE noise superimposed on an optical packet signal based on a bit error rate detected by the optical receiver device for receiving an optical packet signal from the optical amplifier device.
7. The optical packet switching system according to claim 6, wherein the noise superimposition device controls the amount of ASE noise so that the bit error rate detected by the optical receiver device is equal to or lower than a predetermined threshold value.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A substantially pure compound of formula (II),
or a pharmaceutically acceptable salt form thereof.
2. A substantially pure compound of formula (III),
or a pharmaceutically acceptable salt form thereof.
3. A substantially pure compound of formula (IV),
or a pharmaceutically acceptable salt form thereof.
4. A substantially pure compound of formula (V),
or a pharmaceutically acceptable salt form thereof.
5. A substantially pure compound of formula (VI),
or a pharmaceutically acceptable salt form thereof.
6. A pharmaceutical composition, comprising a pharmaceutically acceptable vehicle or diluent and the compound of claim 1.
7. A pharmaceutical composition, comprising a pharmaceutically acceptable vehicle or diluent and the compound of claim 2.
8. A pharmaceutical composition, comprising a pharmaceutically acceptable vehicle or diluent and the compound of claim 3.
9. A pharmaceutical composition, comprising a pharmaceutically acceptable vehicle or diluent and the compound of claim 4.
10. A pharmaceutical composition, comprising a pharmaceutically acceptable vehicle or diluent and the compound of claim 5.