Large-free-spectrum-range reconfigurable optical frequency comb generation device and implementation method

An optical frequency comb and spectral range technology, applied in the field of optics, can solve problems such as uncontrollable number of comb lines, poor phase coherence, poor flatness of optical combs, etc., achieve wide application prospects, reduce frequency and power requirements, reduce required effect

Active Publication Date: 2020-05-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, various optical frequency comb generation schemes that have been proposed are limited by the generation mechanism and design scheme, and

Method used

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  • Large-free-spectrum-range reconfigurable optical frequency comb generation device and implementation method
  • Large-free-spectrum-range reconfigurable optical frequency comb generation device and implementation method
  • Large-free-spectrum-range reconfigurable optical frequency comb generation device and implementation method

Examples

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Example Embodiment

[0049] Examples:

[0050] The optical system simulation software is used to simulate and analyze the large FSR and reconfigurable 6 / 8-line optical frequency comb generation scheme based on the cascade modulator. Refer to the simulation schematic diagram figure 1 .

[0051] The devices needed in the simulation include: radio frequency signal source, single carrier laser, power amplifier, quadrature coupler, DEMZM and MZM and other optoelectronic devices. The main simulation parameters of the system are configured as follows:

[0052] ·RF signal: center frequency 20GHz, power 16dBm;

[0053] ·Single carrier laser: laser with output wavelength 1551nm, power 45mw, relative intensity noise -155dB / Hz, line width 100kHz;

[0054] ·Power amplifier: output power 0.5W;

[0055] · Quadrature coupler: bandwidth: 18-22GHz;

[0056] ·DEMZM and MZM: Half-wave voltage 3.5V, insertion loss 5dB, extinction ratio 30dB;

[0057] Steps:

[0058] Step 1: Connect the laser source to the optical input port of DEM...

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Abstract

The invention provides a large-free-spectrum-range reconfigurable optical frequency comb generation device and an implementation method. The output port of a laser is connected with the input port ofa single-sideband modulation module; the output port of the single-sideband modulation module is connected with theoutput port of an odd/even-order modulation module, a single-frequency radio frequency signal source is connected with thecommon end of a power divider, one output port of the power divider is connected with the common end of a quadrature coupler, and two output ports of the quadrature coupler are respectively connected with two radio frequency ports of the single-sideband modulation module; and the other output port of the power divider is connected with the input port of a poweramplifier, and the output port of the power amplifier is connected with the radio frequency port of the odd/even order modulation module. Generation of large FSR and reconfigurable six-line or eight-line optical frequency combs is effectively realized, the structure is simple, the power is efficient, and the frequency is tunable so that the system has the capability of generating the six-line andeight-line optical combs at the same time, the number of the comb lines can be tuned through a bias point and the requirements on the frequency and the power of microwave signals are significantly reduced.

Description

technical field [0001] The invention relates to the field of optics, in particular to an optical frequency comb generating device and a realization method. Background technique [0002] Optical frequency combs consist of evenly spaced discrete spectral components, and are widely used in high-capacity optical fiber communications, dense wavelength division multiplexing, and optical arbitrary waveform generation. The traditional multi-carrier light source composed of laser arrays has the disadvantages of difficult synchronization and poor phase coherence because each carrier is generated by an independent laser. Optical frequency comb generation methods based on nonlinear optical effects, such as four-wave mixing and self-phase modulation, are limited by optical effects, and the frequency spacing of the generated optical frequency combs is small, and the power flatness of each comb line is poor and the number of comb lines It is uncontrollable, and has the disadvantages of hi...

Claims

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Application Information

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IPC IPC(8): G02F1/01G02F1/21
CPCG02F1/0121G02F1/0123G02F1/21G02F1/212
Inventor 王武营高永胜田洲王鑫圆樊养余蒋炜吕国云
Owner NORTHWESTERN POLYTECHNICAL UNIV
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