What is claimed is:
1. An optical communication link, comprising an optical transmission line that is constructed by combining a positive dispersion optical fiber having a positive dispersion value with a negative dispersion optical fiber having a negative dispersion value, in a wavelength region to be used:
wherein a dispersion value of the positive dispersion optical fiber is 5 psnmkm or more and 15 psnmkm or less; and
wherein DPS values of both the positive dispersion optical fiber and the negative dispersion optical fiber are 250 nm or more, the DPS values being obtained by dividing dispersion values of the respective fibers at a wavelength of 1550 nm by a dispersion gradient.
2. The optical communication link as claimed in claim 1, further comprising a dispersion compensator that compensates for dispersion remaining in the optical transmission line.
3. The optical communication link as claimed in claim 1, further comprising an optical transmission apparatus, an optical reception apparatus, and an optical transmission line which is arranged between the apparatuses.
4. The optical communication link as claimed in claim 3, wherein at least one selected from the group consisting of the optical transmission apparatus and the optical reception apparatus is an optical repeating apparatus.
5. The optical communication link as claimed in claim 1, wherein the positive dispersion optical fiber has an increasing amount of bending loss of 10 dBm or below, on the longest wavelength side in a used wavelength region, in the case of a diameter of 20 mm.
6. The optical communication link as claimed in claim 1, wherein the positive dispersion optical fiber has an average polarization dispersion of 0.15 pskm or below.
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. An apparatus, comprising:
receiving, in a stage lighting device, a command that represents shaping of a light which will be transmitted by the light and a movement of said shaping; and
using said command to cause the shape of a light that is transmitted to change according to a timing associated with said command.
2. An apparatus as in claim 1, wherein said command also includes color information for the shape of light that is passed.
3. An apparatus as in claim 1, wherein said command causes movement of one part within the shape.
4. An apparatus as in claim 1, wherein said timing is a time that is specified for the gobo to change between a first shape and a second shape in increments between said first shape and said second shape.
5. An apparatus as in claim 1, wherein said change according to a timing includes a periodic change between a first shaping effect and a second shaping affect.
6. An apparatus as in claim 1, wherein said change is a change of position.
7. An apparatus comprising:
receiving, in a stage lighting device, a command that represents a periodic change between a first shaping effect and a second shaping effect and a timing for said periodic change; and
applying said command to an electronically controllable light shaping part.
8. An apparatus, comprising:
a stage lighting device which produces a beam of light, and
a light beam shaper which shapes an outer perimeter of the beam of light according to an applied command; and
a controller, which accepts a command to change said shape projected by said light, and automatically causes the shape to change according to a timing.
9. An apparatus as in claim 8, wherein said command also includes color information for the shape of light that is passed, that is received by said controller.
10. An apparatus as in claim 8, wherein said command causes said light beam shaper to move one part within the shape.
11. An apparatus as in claim 8, wherein said timing is a time that is specified for the gobo to change between a first shape and a second shape in increments between said first shape and said second shape.
12. An apparatus as in claim 8, wherein said change according to a timing includes a periodic change between a first shaping effect and a second shaping effect.
13. An apparatus as in claim 8, wherein said change is a change of position.
14. An apparatus as in claim 8, wherein said command includes a control record and a parameter, where said control record defines how the parameter changes the shape.
15. An apparatus comprising:
in a stage lighting device, responsive to a command that represents a periodic change between a first shaping effect and a second shaping effect and a timing for said periodic change to control an electronically controllable light shaping part based on said command.
16. An apparatus as in claim 15, wherein said electronically controllable light shaping part is a DMD.
17. An apparatus as in claim 15, wherein said command also includes color information for the shape of light that is passed.