CN110967892A - Optical frequency comb generation device and method based on MZM-EAM cascade and pulse signal - Google Patents
Optical frequency comb generation device and method based on MZM-EAM cascade and pulse signal Download PDFInfo
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Abstract
本发明公开了光学频率梳技术领域的一种基于MZM‑EAM级联和脉冲信号的光学频率梳产生装置及方法，旨在解决现有技术中光学频率梳结构复杂、产生的光梳频率分量较少、频谱平坦度较低的技术问题，所述比特序列发生器控制脉冲发生器，所述脉冲发生器产生设定波形的周期性脉冲信号经放大器、第一功分器和第二功分器分别输入马赫‑曾德尔调制器和电吸收调制器；所述连续光源产生的光依次经过所述马赫‑曾德尔调制器和所述电吸收调制器调制后传输至所述光谱仪。本发明得到频率分量数目多且功率平坦度高的光学频率梳，具有结构简单，易于实现等优点；在频率分量、覆盖光谱范围和平坦度上兼具优势，对光学频率梳的设计具有很强的灵活性和指向性。
The invention discloses an optical frequency comb generating device and method based on MZM-EAM cascade and pulse signal in the technical field of optical frequency combs, aiming to solve the problems of the complex structure of the optical frequency comb and the relatively high frequency components of the generated optical comb in the prior art. There are few technical problems with low spectral flatness. The bit sequence generator controls the pulse generator, and the pulse generator generates a periodic pulse signal with a set waveform and passes through the amplifier, the first power divider and the second power divider. The Mach-Zehnder modulator and the electro-absorption modulator are respectively input; the light generated by the continuous light source is sequentially modulated by the Mach-Zehnder modulator and the electro-absorption modulator and then transmitted to the spectrometer. The invention obtains an optical frequency comb with a large number of frequency components and high power flatness, and has the advantages of simple structure, easy implementation and the like; it has advantages in frequency components, coverage spectrum range and flatness, and has strong design of optical frequency combs flexibility and directionality.
Description
Technical Field
The invention belongs to the technical field of optical frequency combs, and particularly relates to an optical frequency comb generation device and method based on MZM-EAM cascade and pulse signals.
Background
At present, a WDM (wavelength division multiplexing) system has played a great role in an optical communication backbone network, and according to the recommendation of ITU-T (international telecommunication standardization sector) standard, the WDM system needs a large number of light sources with equal power and wide channel interval as carriers to realize modulation and transmission of information in the subsequent optical communication process, but the cost of a multi-wavelength laser or an optical transmission module is high, and the designability is limited, which is one of the bottlenecks of the WDM system facing the optical transmission end. The optical frequency comb can reduce or even replace a multi-wavelength laser, reduce the cost of the optical communication system, has the advantages of channel interval, designable optical comb line number and the like, and has wide application prospect in future optical communication backbone networks.
Optical Frequency Combs (OFCs), referred to as "optical combs". The optical comb shows discrete frequency components with equal intervals on a frequency domain and a time domain, and is equivalent to collinear synchronous output of a plurality of single-frequency lasers with mutually locked phases. The optical comb has wide spectrum coverage range, narrow line width of a single frequency component, and frequency stability in Hertz level and time resolution in femtosecond level. The method has the characteristics of approximately equal power of frequency components, equal frequency intervals, more frequency components, narrow line width of a single frequency component and the like, and provides a link bridge for various frequency standards such as a microwave frequency standard, an atomic frequency standard, an optical frequency standard and the like.
The existing methods for generating the optical frequency comb at home and abroad mainly comprise: an optical comb generation method based on an optical fiber nonlinear effect, an optical comb generation method based on an optoelectronic oscillator (OEO), an optical comb generation method based on a mode-locked laser, an optical comb generation method based on a micro-ring resonant cavity and an optical comb generation method based on a modulator. The modulator-based optical comb generation method includes a mach-zehnder modulator (MZM) -based method, a Phase Modulator (PM) -based method, an Intensity Modulator (IM) -based method, an electroabsorption modulator (EAM) -based method, a method based on the synergy of a plurality of modulators, and the like.
However, in the existing schemes for generating optical frequency combs based on modulators, the structure is complex, the frequency components of the generated optical combs are few, the spectrum flatness is low, the coverage spectrum range is narrow, and the designability is low. Therefore, the optical frequency comb generating device is simplified, and the optical frequency comb which has high spectrum flatness, wide coverage spectrum range, more frequency components and can be designed has important significance.
Disclosure of Invention
The invention aims to provide an optical frequency comb generation device and method based on MZM-EAM cascade and pulse signals, and aims to solve the technical problems that an optical frequency comb structure is complex, generated optical comb frequency components are few, and spectrum flatness is low in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an optical frequency comb generation device based on MZM-EAM cascade and pulse signals comprises a bit sequence generator, a pulse generator, a continuous light source, a Mach-Zehnder modulator and an electric absorption modulator, wherein the bit sequence generator outputs a binary bit sequence, and controls the pulse generator to generate periodic pulse signals with set waveforms and respectively input the periodic pulse signals into the Mach-Zehnder modulator and the electric absorption modulator; continuous light generated by the continuous light source generates comb-shaped spectrum through the Mach-Zehnder modulator, and then is modulated by the electric absorption modulator, the power of the optical sideband of the low order is reduced, and the power of the optical sideband of the high order is increased.
Optionally, the MZM-EAM cascade and pulse signal based optical frequency comb generating apparatus further includes an amplifier, a first power divider, and a second power divider; a pulse signal generated by the pulse generator is amplified by an amplifier and then is input to one end of the Mach-Zehnder modulator and the second power divider through the first power divider; and the second power divider inputs the pulse signal to the other end of the Mach-Zehnder modulator through the first attenuator and inputs the pulse signal to the electroabsorption modulator through the second adjustable attenuator.
Optionally, the continuous light source is a continuous laser.
Optionally, the mach-zehnder modulator is a single-drive mach-zehnder modulator or a dual-drive mach-zehnder modulator.
Optionally, the electro-absorption modulator employs a quantum confined Stackers effect electro-absorption modulator or a multiple quantum well electro-absorption modulator.
An optical frequency comb generation method based on MZM-EAM cascade and pulse signals comprises the following steps: the bit sequence generator outputs a binary bit sequence to control the pulse generator to generate a periodic pulse signal with a set waveform, and the pulse signal drives the Mach-Zehnder modulator and the electroabsorption modulator; the Mach-Zehnder modulator modulates the single-wavelength continuous light output by the continuous light source to generate a comb spectrum with frequency intervals equal to the frequency of the pulse signal; after the electric absorption modulator modulates the comb spectrum output by the Mach-Zehnder modulator, the power of the optical sideband of the low order is reduced, and the power of the optical sideband of the high order is increased.
Optionally, the mach-zehnder modulator is a single-drive mach-zehnder modulator or a dual-drive mach-zehnder modulator.
Optionally, the electro-absorption modulator employs a quantum confined Stackers effect electro-absorption modulator or a multiple quantum well electro-absorption modulator.
Optionally, the electro-absorption modulator employs a quantum confined Stackers effect electro-absorption modulator or a multiple quantum well electro-absorption modulator.
Optionally, the continuous light source is a continuous laser.
Compared with the prior art, the invention has the following beneficial effects:
(1) the Mach-Zehnder modulator and the electric absorption modulator are driven by the periodic pulse signals with the set waveforms output by the pulse generator to modulate the input continuous light, and the optical frequency comb with a large number of frequency components and high power flatness is obtained, and the optical frequency comb has the advantages of simple structure, easiness in implementation and the like;
(2) the invention realizes the design of comb spectrum output by the Mach-Zehnder modulator by designing the waveform of the periodic pulse signal output by the pulse generator, and the optical frequency comb generated by modulation of the electric absorption modulator has good spectrum characteristics, has advantages in frequency component, coverage spectrum range and flatness, has strong flexibility and directivity for the design of the optical comb, and can be applied to systems such as high-speed optical communication and the like.
Drawings
FIG. 1 is a schematic structural diagram of an optical frequency comb generating apparatus based on MZM-EAM cascade and pulse signals according to an embodiment of the present invention;
FIG. 2 is a comb spectrum diagram of the MZM output of an optical frequency comb generation device based on MZM-EAM cascade and pulse signals according to an embodiment of the present invention;
FIG. 3 is an optical frequency comb spectrum diagram of an EAM output of an optical frequency comb generation device based on MZM-EAM cascade and pulse signals, provided by an embodiment of the invention;
in the figure: 11. a pulse generator; 12. a bit sequence generator; 2. an amplifier; 31. a first power divider; 32. a second power divider; 41. a first adjustable attenuator; 42. a second adjustable attenuator; 5. a continuous light source; 6. a Mach-Zehnder modulator; 7. an electroabsorption modulator; 8. a spectrometer.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 1, the present invention provides an optical frequency comb generating apparatus based on MZM-EAM cascade and pulse signals, which includes a bit sequence generator 12, a pulse generator 11, an amplifier 2, a first power divider 31, a second power divider 32, a continuous light source 5, a mach-zehnder modulator 6, an electroabsorption modulator 7, and a spectrometer 8; the bit sequence generator 12 controls the pulse generator 11, the periodic pulse signal generated by the pulse generator 11 is amplified by the amplifier 2 and then transmitted to the lower arm of the mach-zehnder modulator 6 and the second power divider 32 through the first power divider 31, the pulse signal is transmitted to the upper arm of the mach-zehnder modulator 6 through the first adjustable attenuator 41 by the second power divider 32, and simultaneously transmitted to the electroabsorption modulator 7 through the second adjustable attenuator 42; the light generated by the continuous light source 5 is modulated by the Mach-Zehnder modulator 6 and the electric absorption modulator 7 in sequence and then transmitted to the spectrometer 8. The continuous light source 5 is a continuous laser in this embodiment; the mach-zehnder modulator 6 is a single-drive mach-zehnder modulator or a dual-drive mach-zehnder modulator; the electro-absorption modulator 7 may employ a quantum-confined Steckel-effect electro-absorption modulator (QCSE-EAM) or a multi-quantum-well electro-absorption modulator (MQW-EAM).
The bit sequence generator 12 outputs a corresponding binary bit sequence, and controls the pulse generator 11 to generate a periodic pulse signal with a set waveform to drive the Mach-Zehnder modulator 6 and the electroabsorption modulator 7; the continuous light source 5 outputs single-wavelength continuous light to the Mach-Zehnder modulator 6, and the Mach-Zehnder modulator 6 generates comb-shaped spectrum with frequency intervals equal to the frequency of the pulse signals; after the comb spectrum is modulated by the electro-absorption modulator 7, the power of the low-order optical sideband is reduced, and the power of the high-order optical sideband which cannot be observed is increased originally because the power is too small, so that the power flatness of the comb spectrum is improved, the number of frequency components is increased, and the optical frequency comb with a large number of frequency components and high power flatness is obtained.
Example 2
The embodiment of the invention provides an optical frequency comb generation method based on MZM-EAM cascade and pulse signals, which specifically comprises the following steps:
the method comprises the steps that a binary bit sequence is output through a set bit sequence generator, a pulse generator is controlled to generate a periodic pulse signal with a set waveform, and the pulse signal drives a Mach-Zehnder modulator and an electroabsorption modulator; the pulse signal generated by the pulse generator needs to be amplified by an amplifier to improve the power of the signal, then is divided into 3 same paths of signals by the first power divider and the second power divider, and the signals are respectively connected to the Mach-Zehnder modulator and the electroabsorption modulator, wherein one path of signals connected to the Mach-Zehnder modulator is firstly subjected to signal size adjustment by the first adjustable attenuator and then is connected to the upper support arm of the Mach-Zehnder modulator, so that the controllability of the signals is improved; similarly, the signal connected to the electroabsorption modulator is adjusted in magnitude by the second adjustable attenuator.
The Mach-Zehnder modulator modulates the single-wavelength continuous light output by the continuous light source to generate a comb spectrum with frequency intervals equal to the frequency of the pulse signal;
the electro-absorption modulator modulates the comb spectrum output by the Mach-Zehnder modulator to obtain the optical frequency comb with a large number of frequency components and high power flatness, and outputs the optical frequency comb to the spectrometer.
According to the characteristics of the frequency component number, the frequency interval, the power of each frequency component and the like of the comb spectrum output by the Mach-Zehnder modulator, the pulse signal corresponding to the comb spectrum generated by driving the Mach-Zehnder modulator can be obtained by the principle of the Mach-Zehnder modulator, and the waveform of the pulse can be represented in an infinite approximation manner by superposing a plurality of sine radio frequency signals according to the Fourier transform relation. The amplitude and frequency of the sinusoidal radio frequency signal participating in the superposition can be obtained from the power and the center frequency of each optical sideband of the comb spectrum. The binary bit sequence controlling the pulse generator to generate the pulse signal, the edge time of the pulse signal and the pulse width can also be derived from a fourier transform relationship. Thus, the pulse shape used to generate the comb spectrum can be designed specifically.
The bit sequence generator outputs a binary bit sequence, the pulse generator is controlled to generate corresponding pulse signals to drive the Mach-Zehnder modulator, and the pulse waveform output by the pulse generator and the frequency component number and the frequency interval of the comb spectrum output by the corresponding Mach-Zehnder modulator are determined by the bit sequence and the edge time duty ratio of the pulse generator.
Modulation coefficient of Mach-Zehnder modulator and bias voltage V of two optical branchesbias1、Vbias2And a modulation voltage VpulseIn relation to the modulation factor and chirp factor of the electro-absorption modulator, the modulation voltage V is also related topulseIt is related. The pulse waveform output by the pulse generator is determined by the comb spectrum output by the Mach-Zehnder modulator and can be rectangular, trapezoidal, Gaussian and other irregular waveforms. For example: when the frequency component number of the comb spectrum output by the Mach-Zehnder modulator is 4-7, the pulse is obtained by solving according to the modulation principle of the Mach-Zehnder modulator and the Fourier series relationThe waveform of the pulse signal correspondingly output by the generator is similar to Gaussian, and the similar Gaussian pulse can be equivalently expressed by the Fourier series relation to 4 pulses with the power ratio of 56:28:8:1 and the frequency of 2 respectivelyf c 、4f c 、6f c And 8f c Is equivalent to 8 frequencies off c The input light of the Mach-Zehnder modulator is driven and modulated by the pulse signal to generate comb-shaped spectrum.
The Gaussian-like pulse signal drives the electro-absorption modulator to modulate the comb spectrum output by the Mach-Zehnder modulator, so that the power of the low-order optical sideband of the comb spectrum from the Mach-Zehnder modulator is reduced, the power of the high-order optical sideband which cannot be observed is increased due to too small power originally, the power flatness of the comb spectrum is improved, the number of frequency components is increased, and finally the optical frequency comb with a large number of frequency components and high power flatness is obtained.
Initially setting the central frequency of a continuous light source to be 193.1THz, the optical power to be 10dBm, the initial phase to be 0 and the line width to be 10 MHz; the output bit sequence of the bit sequence generator is 10101010, the pulse width of the Gaussian pulse output by the pulse generator is 50%, the bit rate is 20GBit/s, and the amplitude is 1V; the gain coefficient of the amplifier is 8, the attenuation coefficient of the adjustable attenuator is 2, namely: the modulation voltage of the lower support arm of the Mach-Zehnder modulator is 8.0V, and the modulation voltage of the upper support arm is 6.0V; bias voltage V of Mach-Zehnder modulatorbias1、Vbias2-2.755V and-2.3V, respectively; the modulation factor of the electro-absorption modulator is 0.99 and the chirp factor is 12.
Light output by the light source is injected into the Mach-Zehnder modulator, and the Mach-Zehnder modulator generates a comb spectrum with the frequency component number of 7, the frequency interval of 10GHz and the flatness of 2dB under the driving of a Gaussian-like periodic pulse signal generated by a pulse generator controlled by a bit sequence 10101010, as shown in FIG. 2. After the comb spectrum is modulated by an electric absorption modulator driven by the same pulse signal, an optical frequency comb with the frequency component of 41, the frequency interval of 10GHz and the flatness of 2dB is obtained, as shown in FIG. 3.
In summary, the present invention utilizes the bit sequence generator to control the pulse generator to output the periodic pulse signal with the set waveform, and drives the mach-zehnder modulator and the electroabsorption modulator to modulate the input light to generate the optical frequency comb, which has the advantages of simple structure, easy operation, high spectral flatness of the optical frequency comb, large number of frequency components, tunable frequency interval, designability, good spectral characteristics of the generated optical frequency comb, advantages in both frequency component number and flatness, and important application in the ultra-dense wavelength division multiplexing system of optical communication.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An optical frequency comb generating device based on MZM-EAM cascade and pulse signals is characterized by comprising a bit sequence generator, a pulse generator, a continuous light source, a Mach-Zehnder modulator and an electric absorption modulator,
the bit sequence generator outputs a binary bit sequence, and controls the pulse generator to generate periodic pulse signals with set waveforms and respectively input the periodic pulse signals into the Mach-Zehnder modulator and the electroabsorption modulator;
continuous light generated by the continuous light source generates comb-shaped spectrum through the Mach-Zehnder modulator, and then is modulated by the electric absorption modulator, the power of the optical sideband of the low order is reduced, and the power of the optical sideband of the high order is increased.
2. The MZM-EAM cascade-and-pulse signal-based optical frequency comb generating apparatus of claim 1, further comprising an amplifier, a first power divider, and a second power divider;
a pulse signal generated by the pulse generator is amplified by an amplifier and then is input to one end of the Mach-Zehnder modulator and the second power divider through the first power divider; and the second power divider inputs the pulse signal to the other end of the Mach-Zehnder modulator through the first attenuator and inputs the pulse signal to the electroabsorption modulator through the second adjustable attenuator.
3. The MZM-EAM cascade and pulse signal based optical frequency comb generating apparatus of claim 1, wherein said continuous light source is a continuous laser.
4. The MZM-EAM cascade and pulse signal-based optical frequency comb generation apparatus of claim 1, wherein the mach-zehnder modulator is a single-drive mach-zehnder modulator or a dual-drive mach-zehnder modulator.
5. The MZM-EAM cascade and pulse signal-based optical frequency comb generating apparatus of claim 1, wherein said electro-absorption modulator is a quantum confined steckel effect electro-absorption modulator or a multi-quantum well electro-absorption modulator.
6. An optical frequency comb generation method based on MZM-EAM cascade and pulse signals is characterized by comprising the following steps:
the bit sequence generator outputs a binary bit sequence to control the pulse generator to generate a periodic pulse signal with a set waveform, and the pulse signal drives the Mach-Zehnder modulator and the electroabsorption modulator;
the Mach-Zehnder modulator modulates the single-wavelength continuous light output by the continuous light source to generate a comb spectrum with frequency intervals equal to the frequency of the pulse signal;
after the electric absorption modulator modulates the comb spectrum output by the Mach-Zehnder modulator, the power of the optical sideband of the low order is reduced, and the power of the optical sideband of the high order is increased.
7. The MZM-EAM cascade and pulse signal based optical frequency comb generation method of claim 6, wherein said Mach-Zehnder modulator is a single drive Mach-Zehnder modulator or a dual drive Mach-Zehnder modulator.
8. The method of claim 6, wherein the electro-absorption modulator is a quantum confined Stacke effect electro-absorption modulator or a multi-quantum well electro-absorption modulator.
9. The method of claim 6, wherein the electro-absorption modulator is a quantum confined Stacke effect electro-absorption modulator or a multi-quantum well electro-absorption modulator.
10. The method of claim 6, wherein the continuous optical source is a continuous laser.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987442A (en) * | 2021-02-24 | 2021-06-18 | 南京邮电大学 | Broadband tunable optical frequency comb generation device and method |
| CN113156733A (en) * | 2021-04-20 | 2021-07-23 | 南京邮电大学 | Optical frequency comb generation device based on power operation circuit and cascade MZM |
| CN114815433A (en) * | 2022-04-26 | 2022-07-29 | 电子科技大学 | Optical frequency comb generating device |
| CN115343866A (en) * | 2022-08-19 | 2022-11-15 | 西安邮电大学 | Optical frequency comb generation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005099503A (en) * | 2003-09-25 | 2005-04-14 | Nippon Telegr & Teleph Corp <Ntt> | Pulse light source for communication |
| CN103149772A (en) * | 2013-03-22 | 2013-06-12 | 北京航空航天大学 | Optical frequency comb generator based on time-frequency mapping |
| CN103441802A (en) * | 2013-04-23 | 2013-12-11 | 上海大学 | Comb spectrum generation system and application method thereof based on Mach-Zehnder modulators |
| CN109743115A (en) * | 2018-12-05 | 2019-05-10 | 南京邮电大学 | Microwave Frequency Comb Generation Device and Method Based on MZM Numerically Controlled Optical Heterodyne Method |
-
2019
- 2019-11-19 CN CN201911131308.9A patent/CN110967892A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005099503A (en) * | 2003-09-25 | 2005-04-14 | Nippon Telegr & Teleph Corp <Ntt> | Pulse light source for communication |
| CN103149772A (en) * | 2013-03-22 | 2013-06-12 | 北京航空航天大学 | Optical frequency comb generator based on time-frequency mapping |
| CN103441802A (en) * | 2013-04-23 | 2013-12-11 | 上海大学 | Comb spectrum generation system and application method thereof based on Mach-Zehnder modulators |
| CN109743115A (en) * | 2018-12-05 | 2019-05-10 | 南京邮电大学 | Microwave Frequency Comb Generation Device and Method Based on MZM Numerically Controlled Optical Heterodyne Method |
Non-Patent Citations (3)
| Title |
|---|
| LEI SHANG等: "A flat and broadband optical frequency comb with tunable bandwidth and frequency spacing", 《OPTICS COMMUNICATIONS》 * |
| RIFAT NAZNEEN等: "Cascading of Dual Drive Mach Zehnder Modulator and Electro Absorption Modulator for producing an Optical Comb", 《9TH INTERNATIONAL CONFERENCE ON ELECTRICAL AND COMPUTER ENGINEERING》 * |
| 邵茜: "基于外调制器的光梳产生技术与微波频率梳产生技术的研究", 《中国优秀硕士学位论文全文数据库—信息科技辑》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987442A (en) * | 2021-02-24 | 2021-06-18 | 南京邮电大学 | Broadband tunable optical frequency comb generation device and method |
| CN113156733A (en) * | 2021-04-20 | 2021-07-23 | 南京邮电大学 | Optical frequency comb generation device based on power operation circuit and cascade MZM |
| CN114815433A (en) * | 2022-04-26 | 2022-07-29 | 电子科技大学 | Optical frequency comb generating device |
| CN114815433B (en) * | 2022-04-26 | 2023-04-18 | 电子科技大学 | Optical frequency comb generating device |
| CN115343866A (en) * | 2022-08-19 | 2022-11-15 | 西安邮电大学 | Optical frequency comb generation system |
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