WO2023105722A1 - 波長変換装置 - Google Patents

波長変換装置 Download PDF

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Publication number
WO2023105722A1
WO2023105722A1 PCT/JP2021/045384 JP2021045384W WO2023105722A1 WO 2023105722 A1 WO2023105722 A1 WO 2023105722A1 JP 2021045384 W JP2021045384 W JP 2021045384W WO 2023105722 A1 WO2023105722 A1 WO 2023105722A1
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WO
WIPO (PCT)
Prior art keywords
wavelength conversion
wavelength
temperature
conversion element
light
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Ceased
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PCT/JP2021/045384
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English (en)
French (fr)
Japanese (ja)
Inventor
晃次 圓佛
啓 渡邉
修 忠永
拓志 風間
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NTT Inc
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Nippon Telegraph and Telephone Corp
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Priority to JP2023565813A priority Critical patent/JP7758968B2/ja
Priority to PCT/JP2021/045384 priority patent/WO2023105722A1/ja
Publication of WO2023105722A1 publication Critical patent/WO2023105722A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/37—Non-linear optics for second-harmonic generation

Definitions

  • the present disclosure relates to a wavelength conversion device that applies the second-order nonlinear optical effect.
  • Wavelength conversion technology that applies the second-order nonlinear optical effect is used in various fields such as wavelength conversion of optical signals in optical communication, optical processing, medical care, and biotechnology.
  • the wavelength range of light that is the target of wavelength conversion extends from the ultraviolet range to the visible, infrared, and terahertz ranges.
  • Wavelength conversion technology that applies second-order nonlinear optical effects can convert light in wavelength ranges that cannot be directly output by semiconductor lasers. Often used for production.
  • the wavelength conversion technology that applies this second-order nonlinear optical effect can be used when sufficient power cannot be obtained even in a wavelength band that can be directly generated by a semiconductor laser.
  • a wavelength conversion technique that applies this second-order nonlinear optical effect is used when performing wavelength conversion by generating a difference frequency, which will be described later, or amplification using a parametric effect.
  • a wavelength conversion device that performs these wavelength conversion techniques incorporates a wavelength conversion element based on the second-order nonlinear optical effect.
  • Typical materials applied to wavelength conversion elements include lithium niobate (LiNbO 3 ), which has a large nonlinear constant . Due to its high conversion efficiency, it is widely used in commercial light sources.
  • DFG Difference Frequency Generation
  • an optical parametric amplifier can also be configured in which a second-order nonlinear medium is placed in a resonator, only ⁇ 1 is input, and ⁇ 2 and ⁇ 3 that satisfy (Equation 2) are generated.
  • PSD Phase Sensitive Amplifier
  • PSA two optical amplification operations are known.
  • One is an operation using degenerate parametric amplification in which a signal light and pumping light having half the wavelength of the signal light are input to a second-order nonlinear medium and the signal light is amplified (see, for example, Non-Patent Document 1).
  • the other is an operation using non-degenerate parametric amplification in which a pair of signal light and idler light and pumping light having a wavelength that is the sum frequency of the signal light and idler light are input and the signal light and idler light are amplified.
  • a pair of signal light and idler light is generated by the DFG described above.
  • DFG and parametric amplification are mainly used.
  • signal light and idler light exist in the communication wavelength band of 1.55 ⁇ m band, so pumping light is required to be light in the 0.78 ⁇ m band.
  • SHG light obtained by wavelength-converting a light source in the communication wavelength band is generally used as the excitation light having a half wavelength of the communication wavelength band.
  • Such pumping light is required to have high power and low noise from the viewpoint of achieving high gain and low noise in an optical amplifier such as a PSA.
  • FIG. 1 is a diagram showing the basic configuration of a wavelength conversion device 100 that generates a second harmonic (SHG light) of input light by SHG.
  • the wavelength conversion device 100 includes a wavelength conversion element 102 that converts the wavelength of the excitation light 101, an optical filter 104 that transmits only the wavelength-converted light 103 output from the wavelength conversion element 102, and the temperature of the wavelength conversion element 102. and a temperature controller 105 to control.
  • the wavelength-converted light 103 that is most efficiently converted at the wavelength that satisfies the phase matching condition is output.
  • residual pumping light 106 which is a residual component of the pumping light 101, can also be output from the wavelength conversion element 102 at the same time.
  • This residual pumping light 106 is removed by the optical filter 104 because it adversely affects optical amplification characteristics when input as pumping light of an optical amplifier such as a PSA.
  • the wavelength conversion characteristics depend on the temperature of the wavelength conversion element 102, so the temperature is controlled by the temperature controller 105 so as to maintain the phase matching condition.
  • the temperature controller 105 can be, for example, a Peltier element or a heater.
  • wavelength-converted light for example, wavelength-converted light 103 shown in FIG. 1 generated by a wavelength conversion device (for example, wavelength conversion device 100 shown in FIG. 1) is used as excitation light.
  • the input pumping light wavelength-converted light
  • the temperature controller for example, the temperature controller 105 shown in FIG. 1
  • the phase matching conditions that have been satisfied due to temperature fluctuations and optical loss of the wavelength conversion element due to environmental temperature fluctuations, etc. collapses, and the power of the wavelength-converted light may become unstable. Therefore, it is necessary to compensate for these instabilities and fluctuations.
  • FIG. 2 is a diagram showing the configuration of a conventional wavelength conversion device 200 for stabilizing wavelength-converted light.
  • the wavelength conversion device 200 has the configuration of the wavelength conversion device 100 shown in FIG.
  • a computing device 204 that generates a feedback signal for controlling the temperature of the temperature controller 105 by computation based on the output of 203 and transmits the feedback signal to the temperature controller 105 .
  • the temperature of the wavelength conversion element 102 is periodically detuned in the positive and negative directions at regular intervals, and based on the power fluctuation of the wavelength-converted light 103 caused by the temperature detuning. Accordingly, the temperature controller 105 is configured to be feedback-controlled.
  • FIG. 3A and 3B show the behavior of the wavelength-converted light when the temperature of the wavelength conversion element is detuned.
  • FIG. 3A shows the temperature dependence of the phase control curve of the wavelength conversion device.
  • b) shows an enlarged view near the peak in FIG. 3(a)
  • FIG. 3(c) shows the relationship between the detuning temperature and the output of wavelength-converted light.
  • T 0 is the temperature that satisfies the phase matching condition
  • T 0 + ⁇ T is the temperature of the wavelength conversion element that has changed from T 0 to the high temperature side
  • T is the temperature of the wavelength conversion element that has changed from T 0 to the low temperature side. 0 - ⁇ T, respectively.
  • T 0 + ⁇ T is the temperature of the wavelength conversion element that has changed from T 0 to the low temperature side.
  • the phase matching wavelength is indicated by a dashed line.
  • the phase matching curve in the wavelength conversion element shifts linearly with the temperature of the wavelength conversion element. It can be said that the amount of wavelength shift per unit temperature is generally determined by the physical parameters of the second-order nonlinear medium applied to the wavelength conversion element.
  • the conventional wavelength conversion device 200 periodically detunes the temperature of the wavelength conversion element 102 in the positive and negative directions, and changes the power as shown in FIG.
  • the temperature fluctuation of the wavelength conversion element 102 is calculated from the quantity).
  • a feedback signal is generated based on the calculation result, and the temperature controller 105 is controlled by the feedback signal, thereby further stabilizing the power of the output wavelength-converted light 103 .
  • the present disclosure has been made in view of the problems described above, and an object of the present disclosure is to provide a wavelength conversion device that performs wavelength conversion using SFG, and is capable of reducing the power attenuation of output wavelength-converted light.
  • An object of the present invention is to provide a wavelength conversion device capable of suppressing noise more than the conventional one.
  • the present disclosure provides a wavelength conversion device for inputting excitation light and outputting wavelength-converted light by sum-frequency generation, wherein the wavelength conversion element performs wavelength conversion based on the second-order nonlinear optical effect.
  • a temperature controller for controlling the temperature of the wavelength conversion element, a detector for detecting the power of residual excitation light transmitted through the wavelength conversion element, and an arithmetic unit for generating a control signal for the temperature controller based on the output of the detector.
  • the computing device generates a control signal for detuning the temperature of the wavelength conversion element to the temperature regulator, based on the power fluctuation of the residual excitation light that occurs in response to the temperature detuning of the wavelength conversion element.
  • the temperature fluctuation of the wavelength conversion element is calculated, and based on the temperature fluctuation, a control signal for controlling the temperature controller is generated so that the temperature of the wavelength conversion element becomes a temperature that corrects the fluctuation of the phase matching condition of the wavelength conversion element.
  • a wavelength conversion device configured to generate a wavelength is provided.
  • FIG. 1 is a diagram showing the basic configuration of a wavelength conversion device that generates a second harmonic (SHG light) of input light by SHG;
  • FIG. 1 is a diagram showing the configuration of a wavelength conversion device for stabilizing wavelength-converted light according to the prior art;
  • FIG. 3A is a diagram showing the behavior of wavelength-converted light when the temperature of the wavelength conversion element is detuned,
  • FIG. 3A shows the temperature dependence of the phase control curve of the wavelength conversion device,
  • FIG. 3(a) shows an enlarged view near the peak, and
  • FIG. 3(c) shows the relationship between the detuning temperature and the output of wavelength-converted light.
  • FIG. 4 is a diagram showing power spectra of wavelength-converted light and residual pumping light in the vicinity of a phase matching wavelength;
  • 1 is a diagram showing the configuration of a wavelength conversion device according to an embodiment of the present disclosure;
  • FIG. 1 is a diagram showing the configuration of a wavelength conversion device according to an embodiment of the present disclosure;
  • FIG. 1 is a diagram showing the configuration of a wavelength conversion device according to an embodiment of the present disclosure;
  • FIG. 1 is a diagram showing the configuration of a wavelength conversion device according to an embodiment of the present disclosure;
  • FIG. 1 is a diagram showing the configuration of a wavelength conversion device according to an embodiment of the present disclosure;
  • the wavelength conversion device is the same as the conventional technology in that the temperature of the wavelength conversion element is periodically detuned and the temperature regulator is feedback-controlled based on the power fluctuation due to the detuning.
  • the wavelength conversion device detects the residual pumping light that has been removed by an optical filter or the like in the past, and is feedback-controlled based on the power fluctuation of the residual pumping light that accompanies periodic detuning. , unlike the prior art.
  • the wavelength conversion device generates wavelength-converted light by SHG. play.
  • FIG. 4 is a diagram showing power spectra of wavelength-converted light and residual pump light in the vicinity of the phase matching wavelength. It should be noted that each spectrum in the drawing is a spectrum when the wavelength conversion device 500 described later is used.
  • the temperature that satisfies the phase matching condition is T 0
  • the temperature of the wavelength conversion element that has changed from T 0 to the higher temperature side is T 0 + ⁇ T
  • the temperature of the conversion element is shown as T 0 - ⁇ T, respectively.
  • the power spectrum of the residual excitation light is a distribution showing a dip (minimum value) in the phase matching wavelength when the temperature of the wavelength conversion element is T0 .
  • the wavelength conversion device is configured to control the temperature of the wavelength conversion element by monitoring the residual excitation light.
  • the wavelength conversion device in this embodiment has the same basic configuration as the wavelength conversion device 200 described above. configured to be
  • FIG. 5 is a diagram showing the configuration of a wavelength conversion device 500 according to one embodiment of the present disclosure.
  • the wavelength conversion device 500 includes a wavelength conversion element 102 that performs wavelength conversion on input light 101 including excitation light 101, and wavelength-converted light 103 out of the output light output from the wavelength conversion element 102. Then, based on a dichroic mirror 501 that reflects the residual excitation light 106, a detector 502 that detects the residual excitation light 106 split by the dichroic mirror 501, and the output of the detector 502, the temperature controller 105 is calculated. and an arithmetic device 204 that generates a feedback signal for temperature control and transmits the feedback signal to the temperature controller 105 .
  • the basic configuration of the wavelength conversion device 500 is similar to that of a conventional wavelength conversion device (for example, the wavelength conversion device 200). However, it differs from the conventional wavelength conversion device in that it includes a dichroic mirror 501 instead of the optical filter 104 and does not require an averaging device 203 for stabilizing fluctuations in the phase noise of light to be detected.
  • the wavelength conversion element 102 included in the wavelength conversion device 500 can be, for example, a ridge waveguide using LiNb 3 having a periodically poled structure as a second-order nonlinear medium.
  • the second-order nonlinear medium of the wavelength conversion element 102 is not limited to this, and LiTaO 3 or LiNb(x)Ta(1 ⁇ x)O 3 (where 0 ⁇ x ⁇ 1).
  • at least one element selected from the group consisting of Mg, Zn, Sc and In may be added as an additive.
  • Wavelength conversion is performed using the wavelength conversion device 500 having such a configuration, and SHG light is generated as the wavelength-converted light 103 .
  • the temperature of the wavelength conversion element 102 is periodically detuned by the temperature controller 105 to vary the spectrum of the residual excitation light 106 near the phase matching wavelength.
  • the fluctuation behavior is monitored by the detector 502 , and the arithmetic unit 204 generates a feedback signal based on the output of the detector 502 to control the temperature regulator 105 .
  • the wavelength of the pumping light 101 may be any wavelength in the range from the O band to the L band among optical communication wavelengths.
  • the wavelength-converted light 103 output from the wavelength conversion device 500 is stabilized by suppressing fluctuations in power due to environmental temperature and optical loss. Furthermore, as described above, since the wavelength conversion device 500 does not monitor the output wavelength-converted light 103, power attenuation of the wavelength-converted light 103 that occurs in the conventional technology is also suppressed. Therefore, it becomes possible to supply the stable wavelength-converted light 103 to the outside such as the PSA more efficiently than before.
  • the wavelength conversion device 500 does not use an averaging device (eg, averaging device 203) like the conventional wavelength conversion device (eg, wavelength conversion device 200), and the stability of the wavelength-converted light 103 equivalent to that of the conventional one can be obtained. can be realized.
  • averaging device eg, averaging device 203
  • the power of the residual excitation light 106 is larger than that of the wavelength-converted light 103, as shown in FIG. Since the power of this residual excitation light 106 has a value so large that noise can be ignored, it is not necessary to stabilize fluctuations due to phase shift noise. Therefore, the wavelength conversion device 500 does not require an averaging device, which also has the advantage of simplifying the system configuration.
  • FIG. 6 is a diagram showing the configuration of a wavelength conversion device 600 according to an embodiment of the present disclosure.
  • the wavelength conversion device 600 in this embodiment has, in addition to the structure of the wavelength conversion device 500, an optical fiber 602 that introduces the input light 101 into the metal casing 601 and an optical fiber 602 that outputs the light.
  • excitation light collimating lens 603 for collimating the excitation light focus lens 604 arranged to focus the collimated excitation light on the wavelength conversion element 102, output light from the wavelength conversion element 102 (wavelength converted light 103 and the residual excitation light 106), a focus lens 606 arranged to focus the wavelength-converted light 103 out of the output light collimated by the collimating lens 605 to the output end,
  • An optical fiber 607 that guides the wavelength-converted light 103 condensed by the focus lens 606 to the outside, a mirror 608 that reflects the residual excitation light 106 out of the output light collimated by the collimator lens 605, and a mirror 608 that reflects the residual excitation light 106.
  • a focus lens 609 arranged to condense the residual excitation light 106 collected by the focus lens 609 to the output end, a fiber 610 for guiding the residual excitation light 106 condensed by the focus lens 609 to the detector 502, and the outside of the metal housing 601. and a plurality of optical windows 611 for inputting and outputting light to and from the interior. Since the excitation light 101 and the residual excitation light 106 have the same wavelength, it is preferable to use the same optical fibers 602 and 610 in terms of optical design.
  • the dichroic mirror 501 is inside the metal housing 601 and installed between the collimator lens 605 and the focus lens 606 . Further, in the wavelength conversion device 600 of this embodiment, the detector 502 and the arithmetic device 204 are installed outside the metal housing 601 , and the detector 502 is optically connected to the optical fiber 610 .
  • the arithmetic device 204 is communicably connected to the temperature controller 105 in the same manner as the wavelength conversion device 200 and the wavelength conversion device 500, so that the temperature controller 105 can receive the feedback signal generated by the arithmetic device 204.
  • the form of the feedback signal may be an electrical signal or an optical signal.
  • the electrical signal is transmitted to the temperature controller 105 via a terminal installed on the metal housing 601, and the metal housing 601 and the terminal are electrically insulated. required).
  • wavelength conversion device 600 configured in this way is used, as in the first embodiment, if wavelength conversion is performed to generate SHG light, a conventional wavelength conversion device (for example, the wavelength conversion device 200) can be used. , a stable wavelength-converted light 103 can be generated.
  • the wavelength conversion device 600 does not monitor the output wavelength-converted light 103, so it is possible to perform wavelength conversion while suppressing the power attenuation of the wavelength-converted light 103.
  • the wavelength conversion device 600 does not require an averaging device, and therefore has the advantage of simplifying the system configuration.
  • the wavelength conversion device 600 has a structure in which the mechanism for wavelength conversion and the mechanism for demultiplexing the output light from the wavelength conversion element are hermetically sealed inside the metal housing 601 . Therefore, it is possible to generate the wavelength-converted light 103 that is more stable than the wavelength conversion device 500 without being easily affected by external temperature fluctuations and the like.
  • the wavelength conversion device relates to the wavelength conversion device 600 described in the second embodiment, in which the detector 502 for detecting the residual excitation light 106 is installed inside the metal housing 601 .
  • FIG. 7 is a diagram showing the configuration of a wavelength conversion device 700 according to an embodiment of the present disclosure.
  • the wavelength conversion device 700 in this embodiment is the same as the wavelength conversion device 600 described in the second embodiment, except that the detector 502 for detecting the residual excitation light 106 is inside the metal casing 601. It has an installed structure.
  • the detector 502 included in the wavelength conversion device 700 is a large diameter detector.
  • the mirror 608, the focus lens 609, the optical window 611 installed between the mirror 608 and the focus lens 609, and the optical fiber 610, which are included in the wavelength conversion device 600, are unnecessary. becomes.
  • the wavelength conversion device 700 having such a configuration has the advantage of simplifying the optical alignment compared to the wavelength conversion device 600 described in the second embodiment. That is, the wavelength conversion device 600 requires alignment for introducing the residual pumping light 106 demultiplexed from the output light into the optical fiber 610.
  • the detector 502 installed in the wavelength conversion device 700 is Since it is a detector with a large aperture that can receive collimated light, it can be optically coupled with passive alignment. As a result, the lead time for module mounting can be shortened.
  • wavelength conversion device 700 if wavelength conversion is performed by using such a wavelength conversion device 700 to generate SHG light in the same manner as in the first and second embodiments, a conventional wavelength conversion device (for example, wavelength Similar to the converter 200), it is possible to generate stable wavelength-converted light 103.
  • a conventional wavelength conversion device for example, wavelength Similar to the converter 200
  • the wavelength conversion device can stabilize the power of the wavelength-converted light while suppressing the power attenuation of the output wavelength-converted light. Since such a wavelength converter can efficiently supply input light to an optical amplifier such as a PSA, it is expected to be applied to the light source of an optical amplifier.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
PCT/JP2021/045384 2021-12-09 2021-12-09 波長変換装置 Ceased WO2023105722A1 (ja)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001168439A (ja) * 1999-12-09 2001-06-22 Fuji Photo Film Co Ltd 発光装置
US20060072635A1 (en) * 2004-10-05 2006-04-06 Wang Charles X Stabilized frequency-converted laser system
JP2006330518A (ja) * 2005-05-27 2006-12-07 Laserfront Technologies Inc 高調波発生装置
JP2009142864A (ja) * 2007-12-14 2009-07-02 Keyence Corp レーザ加工装置、レーザ加工装置の設定方法及びレーザ加工装置の設定プログラム並びにコンピュータで読取可能な記録媒体
JP2013065753A (ja) * 2011-09-20 2013-04-11 Shimadzu Corp 固体レーザ装置
JP2020086031A (ja) * 2018-11-20 2020-06-04 日本電信電話株式会社 波長変換装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102156943A (zh) * 2011-04-18 2011-08-17 徐蔚 一种通过嵌入感动芯引擎的移动终端实现即时交易的信息处理系统及其方法
US9083147B2 (en) 2011-10-28 2015-07-14 Ofs Fitel, Llc Distributed feedback (DFB) Brillouin fiber lasers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001168439A (ja) * 1999-12-09 2001-06-22 Fuji Photo Film Co Ltd 発光装置
US20060072635A1 (en) * 2004-10-05 2006-04-06 Wang Charles X Stabilized frequency-converted laser system
JP2006330518A (ja) * 2005-05-27 2006-12-07 Laserfront Technologies Inc 高調波発生装置
JP2009142864A (ja) * 2007-12-14 2009-07-02 Keyence Corp レーザ加工装置、レーザ加工装置の設定方法及びレーザ加工装置の設定プログラム並びにコンピュータで読取可能な記録媒体
JP2013065753A (ja) * 2011-09-20 2013-04-11 Shimadzu Corp 固体レーザ装置
JP2020086031A (ja) * 2018-11-20 2020-06-04 日本電信電話株式会社 波長変換装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
UMEKI T., TADANAGA O., ASOBE M., MIYAMOTO Y., TAKENOUCHI H.: "First demonstration of high-order QAM signal amplification in PPLN-based phase sensitive amplifier", OPTICS EXPRESS, vol. 22, no. 3, 10 February 2014 (2014-02-10), pages 2473 - 2482, XP055830426, DOI: 10.1364/OE.22.002473 *
UMEKI TAKESHI, TADANAGA OSAMU, TAKADA ATSUSHI, ASOBE MASAKI: "Phase sensitive degenerate parametric amplification using directly-bonded PPLN ridge waveguides", OPTICS EXPRESS, vol. 19, no. 7, 28 March 2011 (2011-03-28), pages 6326 - 6332, XP055981372, DOI: 10.1364/OE.19.006326 *

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