Optical device capable of switching output intensity of light of predetermined polarized wave, optical transmitter using the device, network using the transmitter, and method of driving optical device
First Claim
Patent Images
1. An optical device comprising:
- a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces, wherein an output intensity of light of a predetermined polarized wave in a first oscillation state mainly based on the resonance by said first resonator structure is different from an output intensity of light of the predetermined polarized wave in a second oscillation state mainly based on the resonance by said second resonator structure.
1 Assignment
0 Petitions
Accused Products
Abstract
In an optical device having a diffraction grating and at least two surfaces for reflecting light, the oscillation state is switched between a first oscillation state mainly based on resonance by distributed reflection by the diffraction grating, and a second oscillation state mainly based on Fabry-Perot resonance between the two surfaces. The characteristics of one of two modes to be used are improved at the cost of coherence of the other mode.
-
Citations
40 Claims
-
1. An optical device comprising:
a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces, wherein an output intensity of light of a predetermined polarized wave in a first oscillation state mainly based on the resonance by said first resonator structure is different from an output intensity of light of the predetermined polarized wave in a second oscillation state mainly based on the resonance by said second resonator structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
29. An optical device comprising:
-
a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces; and means for switching an oscillation state between a first oscillation state mainly based on the resonance by said first resonator structure and a second oscillation state mainly based on the resonance by said second resonator structure.
-
-
30. An optical device comprising:
-
a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces; and an electrode for applying electrical control for switching an oscillation state between a first oscillation state mainly based on the resonance by said first resonator structure and a second oscillation state mainly based on the resonance by said second resonator structure.
-
-
31. An optical transmitter comprising:
-
an optical device for outputting light, said optical device comprising; a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces, wherein an output intensity of light of a predetermined polarized wave in a first oscillation state mainly based on the resonance by said first resonator structure is different from an output intensity of light of the predetermined polarized wave in a second oscillation state mainly based on the resonance by said second resonator structure; and a polarized wave selector for extracting the light of the predetermined polarized wave from the output light from said optical device.
-
-
32. An optical transmitter comprising:
-
an optical device for outputting light, said optical device comprising; a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces; and means for switching an oscillation state between a first oscillation state mainly based on the resonance by said first resonator structure and a second oscillation state mainly based on the resonance by said second resonator structure; and a polarized wave selector for extracting the light of the predetermined polarized wave from the output light from said optical device.
-
-
33. An optical transmitter comprising:
-
an optical device for outputting light, said optical device comprising; a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces; and an electrode for applying electrical control for switching an oscillation state between a first oscillation state mainly based on the resonance by said first resonator structure and a second oscillation state mainly based on the resonance by said second resonator structure; and a polarized wave selector for extracting the light of the predetermined polarized wave from the output light from said optical device.
-
-
34. A network for transmitting an optical signal, comprising:
-
an optical transmitter comprising; an optical device for outputting light, said optical device comprising; a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces, wherein an output intensity of light of a predetermined polarized wave in a first oscillation state mainly based on the resonance by said first resonator structure is different from an output intensity of light of the predetermined polarized wave in a second oscillation state mainly based on the resonance by said second resonator structure; and a polarized wave selector for extracting the light of the predetermined polarized wave from the output light from said optical device; and an optical receiver for receiving the light output from said optical transmitter.
-
-
35. A network for transmitting an optical signal, comprising:
-
an optical transmitter comprising; an optical device for outputting light, said optical device comprising; a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces; and means for switching an oscillation state between a first oscillation state mainly based on the resonance by said first resonator structure and a second oscillation state mainly based on the resonance by said second resonator structure; and a polarized wave selector for extracting the light of the predetermined polarized wave from the output light from said optical device; and an optical receiver for receiving the light output from said optical transmitter.
-
-
36. A network for transmitting an optical signal, comprising:
-
an optical transmitter comprising; an optical device for outputting light, said optical device comprising; a compound resonator structure having a first resonator structure which produces resonance by reflecting light using a diffraction grating, and a second resonator structure which produces Fabry-Perot resonance by reflecting light using at least two surfaces; and an electrode for applying electrical control for switching an oscillation state between a first oscillation state mainly based on the resonance by said first resonator structure and a second oscillation state mainly based on the resonance by said second resonator structure; and a polarized wave selector for extracting the light of the predetermined polarized wave from the output light from said optical device; and an optical receiver for receiving the light output from said optical transmitter.
-
-
37. A method of driving an optical device having a diffraction grating and at least two surfaces for reflecting light, comprising the step of:
switching an oscillation state between a first oscillation state to which resonance by reflection of light by the diffraction grating greatly contributes, and a second oscillation state in which a degree of contribution of the resonance by the reflection of light by the diffraction grating is smaller than the first oscillation state. - View Dependent Claims (38, 39, 40)
Specification