COHERENT OPTICAL RECEIVER AND LOCAL LIGHT SWITCHING METHOD
First Claim
1. A coherent optical receiver comprising:
- a signal light divergence unit that causes signal light to diverge to first signal light and second signal light;
a local oscillation light source that generates local oscillating light (local light);
an optical phase hybrid unit that causes the first signal light to interfere with the local light and outputting an interference light; and
a wavelength detection unit that receives the second signal light, detects a wavelength of the signal light on the basis of the second signal light, and thereby controls a wavelength of the local light generated by the local oscillation light source.
1 Assignment
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Accused Products
Abstract
In order to promptly switch a wavelength of local light in conjunction with switching of a wavelength of signal light, a coherent optical receiver includes a signal light divergence unit for causing signal light to diverge to first signal light and second signal light; a local oscillation light source for generating local oscillating light (local light); an optical phase hybrid unit for causing the first signal light to interfere with the local light and outputting interference light; and a wavelength detection unit for receiving the second signal light, detecting a wavelength of the signal light on the basis of the second signal light, and thereby controlling a wavelength of the local light generated by the local oscillation light source.
7 Citations
23 Claims
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1. A coherent optical receiver comprising:
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a signal light divergence unit that causes signal light to diverge to first signal light and second signal light; a local oscillation light source that generates local oscillating light (local light); an optical phase hybrid unit that causes the first signal light to interfere with the local light and outputting an interference light; and a wavelength detection unit that receives the second signal light, detects a wavelength of the signal light on the basis of the second signal light, and thereby controls a wavelength of the local light generated by the local oscillation light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 11, 12, 13)
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8. (canceled)
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10. (canceled)
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14. A local light switching method comprising:
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causing signal light to diverge to first signal light and second signal light, the first signal light being inputted to an optical phase hybrid unit that causes the first signal light to interfere with local oscillating light (local light) and outputs interference light, the second signal light being inputted to a wavelength detection unit; in the wavelength detection unit, detecting a wavelength of the signal light on the basis of the second signal light, and performing control of a wavelength of the local light generated by the local oscillation light source. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A coherent optical receiver comprising:
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signal light divergence means for causing signal light to diverge to first signal light and second signal light; local oscillation light source for generating local oscillating light (local light); optical phase hybrid means for causing the first signal light to interfere with the local light and outputting an interference light; and wavelength detection means for receiving the second signal light, detecting a wavelength of the signal light on the basis of the second signal light, and thereby controlling a wavelength of the local light generated by the local oscillation light source.
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Specification