Optical microcavity optical frequency comb generation apparatus and generation method based on injected seed light

An optical microcavity and generating device technology, which is applied in the field of integrated optics and nonlinear optics, can solve the problem of uncontrollable comb intervals, etc., and achieve an increase in the adjustable range of wavelength and power, a stable optical frequency comb, and strong repeatability Effect

Active Publication Date: 2015-10-14
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the defects of the prior art, the purpose of the present invention is to provide an optical microcavity optical frequency comb generating device based on injected seed light, which aims to solve the problem of uncontrollable comb teeth spacing of the optical frequency comb generated by a single pump in the prior art. question

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  • Optical microcavity optical frequency comb generation apparatus and generation method based on injected seed light
  • Optical microcavity optical frequency comb generation apparatus and generation method based on injected seed light
  • Optical microcavity optical frequency comb generation apparatus and generation method based on injected seed light

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specific Embodiment 1

[0041] figure 2 As shown, the tunable single-frequency laser 201 provides quasi-monochromatic laser light, which is amplified by the high-power optical amplifier 202 and divided into two parts by the beam splitter 203. One part provides the pump laser 1 for the optical microcavity 8, and the pump light power is 500 mW . The other part passes through the optical fiber ring composed of the single sideband modulator 204 and the optical amplifier 205 to generate a series of frequency components at equal intervals, and the frequency interval is equal to the modulation frequency. After passing through the optical filter 206, only light at a position 1×FSR away from the pump wavelength is allowed to pass through, and this part of light becomes seed light with a power of 5 mW, and is injected into the optical microcavity 208 together with the pump light after passing through the beam combiner 207 . The cavity length is 628 microns and the FSR is 226 GHz. The output terminal 209 is ...

specific Embodiment 2

[0043] figure 2 As shown, the difference between the second implementation example and the first implementation example is that the distance Δν between the seed light and the pump light is changed. Adjust the center wavelength of the optical filter 206 to the positions of 1×FSR, 3×FSR, and 5×FSR from the pumping wavelength successively, so as to realize the optical frequencies with comb intervals of 1×FSR, 3×FSR, and 5×FSR Comb output.

[0044] like Figure 5 (a), (b), and (c), the intervals of the generated spectral combs are 1×FSR, 3×FSR, and 5×FSR, respectively. Figure 5 The middle abscissa is the mode number, the mode number of the pump light is 0, and the ordinate indicates the spectrum power. It can be seen that, by using the system of the present invention, it is easier to realize the optical frequency comb of the optical microcavity, and the interval between the teeth of the comb can be controlled.

specific Embodiment 3

[0045] The difference between the third implementation example and the first implementation example is that the optical filter 206 is adjusted so that the light at positions 4×FSR and 5×FSR away from the pumping wavelength pass through at the same time and become seed light.

[0046] like Figure 6 As shown, a stable optical frequency comb output can be produced. Figure 6 The middle abscissa is the mode number, the mode number of the pump light is 0, and the ordinate indicates the spectrum power.

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Abstract

The invention discloses an optical microcavity optical frequency comb generation apparatus and generation method based on injected seed light. The optical microcavity optical frequency comb generation apparatus comprises pumping laser, a first optical amplifier, a first beam splitter, a fiber loop, an optical filter, a binding device and an optical microcaity, wherein an input end of the first amplifier is connected to the pumping laser; an input end of the first beam splitter is connected to an output end of the first optical amplifier; one end of the fiber loop is connected to a second output end of the first beam splitter; an input end of the optical filter is connected to the other end of the fiber loop; a first input end of the binding device is connected to the first output end of the first beam splitter; a second input end of the binding device is connected to an output end of the optical filter; an input end of the optical microcavity is connected to the output end of the binding device; output of the pumping laser is divided into two parts by the first beam splitter after amplification by the first optical amplifier, including pumping light and seed light orderly passing through the fiber loop and the optical filter; and the pumping light and the seed light are injected into the optical microcavity via the binding device, and then optical frequency comb with controllable comb gaps is produced.

Description

technical field [0001] The invention belongs to the field of integrated optics and nonlinear optics, and more specifically relates to an optical microcavity optical frequency comb generating device and a generating method based on injected seed light. Background technique [0002] An optical frequency comb is a comb-like spectrum of discrete, equally spaced frequencies widely used for precision measurements. The optical frequency comb technology based on the optical microcavity expands the application range of the traditional optical frequency comb technology, and has higher advantages in the application of precision frequency calibration, on-chip multi-wavelength light source and optical soliton transmission, storage and other devices, and can reduce the number of lasers, Improve the signal-to-noise ratio of the transmission signal, and act as a dynamic buffer, etc. [0003] Traditional optical frequency comb technology relies on mode-locked lasers. The cavity length of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35H01S3/108
CPCG02F1/3501G02F1/353H01S3/108
Inventor 张敏明李梅凤周飞亚卢鲁璐子刘德明
Owner HUAZHONG UNIV OF SCI & TECH
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