OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING OPERATION STATE OF OPTICAL TRANSMITTER
First Claim
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1. An optical transmitter, comprising:
- a ring waveguide;
an electrode which is formed near the ring waveguide and is provided with a signal;
a first waveguide optically coupled to the ring waveguide;
a second waveguide optically coupled to the ring waveguide without optically coupled directly to the first waveguide; and
a light source configured to supply continuous wave light to the first waveguide.
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Abstract
An optical transmitter includes: a ring waveguide; an electrode which is formed near the ring waveguide and is provided with a signal; a first waveguide optically coupled to the ring waveguide; a second waveguide optically coupled to the ring waveguide without optically coupled directly to the first waveguide; and a light source configured to supply continuous wave light to the first waveguide.
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Citations
11 Claims
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1. An optical transmitter, comprising:
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a ring waveguide; an electrode which is formed near the ring waveguide and is provided with a signal; a first waveguide optically coupled to the ring waveguide; a second waveguide optically coupled to the ring waveguide without optically coupled directly to the first waveguide; and a light source configured to supply continuous wave light to the first waveguide. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical transmitter, comprising:
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a plurality of ring waveguides optically coupled in cascade; an electrode which is formed near the ring waveguides and is provided with a signal; a first waveguide optically coupled to one of the ring waveguides located at one end of the ring waveguides; a second waveguide optically coupled to another of the ring waveguides located at the other end of the ring waveguides without optically coupled directly to the first waveguide; and a light source configured to supply continuous wave light to the first waveguide.
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8. An optical transmitter including a plurality of ring resonator-based transmitters and a bus waveguide, wherein:
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each ring resonator-based transmitter comprises; a ring waveguide; an electrode which is formed near the ring waveguide and is provided with a signal; an input waveguide which is optically coupled to the ring waveguide; and a light source configured to supply continuous wave light to the input waveguide; wavelengths of continuous wave light generated by the light sources of respective ring resonator-based transmitters are different from one another, and the ring waveguides of respective ring resonator-based transmitters are optically coupled to the bus waveguide.
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9. An optical modulator, comprising:
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a ring waveguide; an electrode which is formed near the ring waveguide and is provided with a signal; a first waveguide which is optically coupled to the ring waveguide, continuous wave light being input to the first waveguide; and a second waveguide which is optically coupled to the ring waveguide without optically coupled directly to the first waveguide.
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10. A method for controlling an optical transmitter that includes a ring waveguide, an electrode formed near the ring waveguide, a first waveguide optically coupled to the ring waveguide, a second waveguide optically coupled to the ring waveguide without optically coupled directly to the first waveguide, and a light source which supplies continuous wave light to the first waveguide from a first end of the first waveguide, the method comprising:
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monitoring an optical level at a second end of the first waveguide while applying a specified voltage to the electrode; and controlling the temperature of the ring waveguide to that the monitored optical level is smaller. - View Dependent Claims (11)
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Specification