基于稀土掺杂增益非线性光波导的近自相似放大平坦光频率梳
By utilizing a near-self-similar amplification process involving gain, self-phase modulation, and optical wave splitting in a normal dispersive rare-earth-doped nonlinear optical waveguide amplifier, the problems of insufficient spectral flatness and bandwidth in optical frequency comb technology are solved, achieving efficient optical frequency comb spectral broadening and flattening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING JIAOTONG UNIV
- Filing Date
- 2025-02-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing optical frequency comb technology has room for improvement in terms of spectral flatness and bandwidth, especially due to fiber/waveguide loss and environmental sensitivity issues, making it difficult to achieve efficient spectral broadening and flattening.
A normal dispersion rare-earth-doped nonlinear optical waveguide amplifier is used. Through the combined effects of normal dispersion, gain, self-phase modulation and optical wave splitting of high repetition frequency optical pulses, a near self-similar amplification process is achieved, generating a flat optical frequency comb.
The spectral broadening and spectral envelope flattening of the high repetition frequency optical frequency comb were achieved within a relatively short optical waveguide length, improving the overall performance of the optical frequency comb, especially exhibiting good flatness and bandwidth in the 1550nm band.
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Figure CN119828396B_ABST