WAVELENGTH SWEPT SOURCE APPARATUS AND CONTROLLING METHOD THEREOF
First Claim
1. A wavelength swept source apparatus comprising:
- a light source configured to generate single mode light;
an optical comb generation unit configured to generate a basic optical comb comprising a plurality of light rays having identical frequency differences with adjacent light rays by modulating the generated single mode light;
a frequency band extension unit configured to generate a plurality of optical combs by modulating the plurality of light rays, wherein each of the plurality of optical combs comprises same number of light rays as the plurality of light rays, each of the same number of light rays has identical frequency differences with adjacent light rays, each of the plurality of optical combs does not overlap the basic optical comb and has a different frequency band from that of the basic optical comb, and the plurality of optical combs is distributed in a wider frequency band than that in which the basic optical comb is distributed;
a light emission unit configured to sequentially emit the plurality of light rays and light rays included in the plurality of optical combs according to frequencies of the plurality of light rays and the light rays included in the plurality of optical combs; and
a control unit configured to adjust a value of a control variable for at least one of the light source, the optical comb generation unit, the frequency band extension unit, and the light emission unit, based on a characteristic of light outputted from at least one of the light source, the optical comb generation unit, the frequency band extension unit, and the light emission unit.
1 Assignment
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Accused Products
Abstract
Provided are a wavelength swept source apparatus and a method for controlling thereof. According to the provided apparatus and method, single mode light is generated, a basic optical comb is generated by modulating the generated single mode light, and a plurality of optical combs having different a frequency band from that of the basic optical comb is generated by modulating the plurality of light rays. The plurality of light rays and light rays included in the plurality of optical combs are sequentially emitted according to frequencies of the plurality of light rays and the light rays included in the plurality of optical combs. A value of a control variable is adjusted based on a characteristic of the generated single mode light, the plurality of light rays, the light rays included in the plurality of optical combs, and the emitted light rays.
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Citations
12 Claims
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1. A wavelength swept source apparatus comprising:
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a light source configured to generate single mode light; an optical comb generation unit configured to generate a basic optical comb comprising a plurality of light rays having identical frequency differences with adjacent light rays by modulating the generated single mode light; a frequency band extension unit configured to generate a plurality of optical combs by modulating the plurality of light rays, wherein each of the plurality of optical combs comprises same number of light rays as the plurality of light rays, each of the same number of light rays has identical frequency differences with adjacent light rays, each of the plurality of optical combs does not overlap the basic optical comb and has a different frequency band from that of the basic optical comb, and the plurality of optical combs is distributed in a wider frequency band than that in which the basic optical comb is distributed; a light emission unit configured to sequentially emit the plurality of light rays and light rays included in the plurality of optical combs according to frequencies of the plurality of light rays and the light rays included in the plurality of optical combs; and a control unit configured to adjust a value of a control variable for at least one of the light source, the optical comb generation unit, the frequency band extension unit, and the light emission unit, based on a characteristic of light outputted from at least one of the light source, the optical comb generation unit, the frequency band extension unit, and the light emission unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling a wavelength swept source apparatus, the method comprising:
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generating single mode light; generating a basic optical comb comprising a plurality of light rays having identical frequency differences with adjacent light rays by modulating the generated single mode light; generating a plurality of optical combs by modulating the plurality of light rays, wherein each of the plurality of optical combs comprises same number of light rays as the plurality of light rays, each of the same number of light rays has identical frequency differences with adjacent light rays, each of the plurality of optical combs does not overlap the basic optical comb and has a different frequency band from that of the basic optical comb, and the plurality of optical combs is distributed in a wider frequency band than that in which the basic optical comb is distributed; sequentially emitting the plurality of light rays and light rays included in the plurality of optical combs according to frequencies of the plurality of light rays and the light rays included in the plurality of optical combs; determining whether a characteristic of at least one of the generated single mode light, the plurality of light rays, the light rays included in the plurality of optical combs, and the emitted light rays reaches a target value; and adjusting a value of a control variable for at least one of the generated single mode light, the plurality of light rays, the light rays included in the plurality of optical combs, and the emitted light rays, if the characteristic of at least one of the generated single mode light, the plurality of light rays, the light rays included in the plurality of optical combs, and the emitted light rays does not reach the target value. - View Dependent Claims (10, 11, 12)
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Specification