CN107534505B - A kind of overloading wave laser and the method for generating multi-carrier light - Google Patents
A kind of overloading wave laser and the method for generating multi-carrier light Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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Abstract
A kind of overloading wave laser and the method for generating multi-carrier light, phase compensation is carried out to the carrier wave of needs by adjusting one or more optical phase shifters, when not needing the carrier wave of a certain wavelength, the light path for the corresponding optical phase shifter that adjusts the carrier wave of the wavelength can be passed through, so that the wavelength carrier generates destructive interference in the loop, to realize turn-off function.In this way, the interval between the quantity and adjacent carrier of the carrier wave of overloading wave laser output can flexibly be set, the flexibility of overloading wave laser is improved.
Description
Technical field
The present invention relates to technical field of photo communication, and in particular to a kind of overloading wave laser and the side for generating multi-carrier light
Method.
Background technique
Multicarrier light source is important component indispensable in optical communication system.The production of multi-carrier light in multicarrier light source
Raw technology is led in the application such as multicarrier coherent light communication, high-precision optical atomic clock, low noise microwave communication, random pulses shaping
Domain is the core technology of most critical.
In many application fields, multi-carrier light, which generally requires, meets corresponding condition, for example, multi-carrier light need to come from monochromatic light
Source, the phase of each carrier wave is associated in multi-carrier light, the interval controllable precise etc. of each carrier wave in multi-carrier light.
In field of high-speed optical communications, with the rapid growth of data traffic in recent years, multi-transceiver technology is towards great Rong
The optics multi-transceiver technology evolution of amount, spectral efficient, thus urgent demand is proposed to multi wave length illuminating source.Meanwhile future
The planning of flexible network transmission scheme also claims to the flexibility of multi wave length illuminating source.
However, comparatively fixation is compared at existing multi-carrier light generation technology, number of carrier wave, carrier wave interval, it is difficult to
Any to adjust, flexibility is poor.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of overloading wave laser and the methods for generating multi-carrier light.
The embodiment of the present invention in a first aspect, provide a kind of overloading wave laser, the overloading wave laser includes being used for
The loop of multi-carrier light is generated, includes mode locking unit, demultiplexer, multiple optical phase shifters, wave multiplexer, gain in the loop
Unit and output unit；The mode locking unit is used to lock the phase of multi-carrier light in the loop；The demultiplexer includes
Input port and multiple output ports, the demultiplexer is for filtering the multi-carrier light received from the input port
Wave processing, and multiple single carrier light that filtering processing obtains are exported from the multiple output port, wherein the multiple output
The corresponding single carrier light of each output port in port；The multiple optical phase shifter is multiple defeated with the demultiplexer
Exit port is connected in a manner of one-to-one, the phase of each single carrier light for adjusting input；Wave multiplexer, for described more
The light of a optical phase shifter output carries out multiplex processing；Gain unit, for amplifying the multi-carrier light for inputting the gain unit；
Output unit, including the first output port, second output terminal mouth and input port, the input port of the output unit is for connecing
The multi-carrier light in the loop is received, first output port is used to export multi-carrier light to the loop, and described second is defeated
Exit port is used to export the multi-carrier light that lasing generates in the loop to the multicarrier laser external.
The second aspect of the embodiment of the present invention provides a kind of method for generating multi-carrier light, can be applied to multicarrier laser
In device, the overloading wave laser includes the loop for generating multi-carrier light, includes mode locking unit, demultiplexing in the loop
Device, multiple optical phase shifters, wave multiplexer, gain unit and output unit, which comprises locked using the mode locking unit
The phase of multi-carrier light in the loop；The multi-carrier light in loop is filtered using the demultiplexer, and defeated
The multiple single carrier light being filtered out；The phase of the multiple single carrier light is adjusted using the multiple optical phase shifter
Position；Multiplex processing is carried out to the light that the multiple optical phase shifter exports using the wave multiplexer；It is put using the gain unit
Multi-carrier light in the big loop；The multi-carrier light that lasing generates in the loop is exported using the output unit.
Overloading wave laser provided in an embodiment of the present invention and generate multi-carrier light method comprising demultiplexer with
And the multiple optical phase devices being connected with demultiplexer, each optical phase device can adjust the phase of corresponding carrier light
Section, by this shutdown for adjusting achievable part light carrier, so that the flexible modulation of number of carrier wave and carrier wave interval is realized,
Improve the flexibility of multicarrier light source.
Detailed description of the invention
In order to illustrate more clearly of the present invention and related embodiment, the following drawings is provided:
Fig. 1 is multicarrier laser structure figure provided in an embodiment of the present invention；
The multi-carrier light frequency interval signal that Fig. 2 is generated when being optical phase shifter different disposal provided in an embodiment of the present invention
Figure.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further details.Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not make
For limitation of the invention.
The embodiment of the present invention in a first aspect, provide a kind of overloading wave laser, the overloading wave laser includes being used for
The loop of multi-carrier light is generated, includes mode locking unit, demultiplexer, multiple optical phase shifters, wave multiplexer, gain in the loop
Unit and output unit；The mode locking unit is used to lock the phase of multi-carrier light in the loop；The demultiplexer includes
Input port and multiple output ports, the demultiplexer is for filtering the multi-carrier light received from the input port
Wave processing, and multiple single carrier light that filtering processing obtains are exported from the multiple output port, wherein the multiple output
The corresponding single carrier light of each output port in port；The multiple optical phase shifter is multiple defeated with the demultiplexer
Exit port is connected in a manner of one-to-one, the phase of each single carrier light for adjusting input；Wave multiplexer, for described more
The light of a optical phase shifter output carries out multiplex processing；Gain unit, for amplifying the multi-carrier light for inputting the gain unit；
Output unit, including the first output port, second output terminal mouth and input port, the input port of the output unit is for connecing
The multi-carrier light in the loop is received, first output port is used to export multi-carrier light to the loop, and described second is defeated
Exit port is used to export the multi-carrier light that lasing generates in the loop to the multicarrier laser external.
Optionally, in conjunction with the embodiment of the present invention in a first aspect, in the first embodiment, the mode locking unit includes
Input port and output port, the input port of the mode locking unit is for receiving the first output end from the output unit
The multi-carrier light of mouth, the output port of the mode locking unit are used to export multi-carrier light to the demultiplexer；The demultiplexing
The input port of device is used to receive the multi-carrier light of the output port output of the mode locking unit；The gain unit includes input
Port and output port, the input port of the gain unit are used to receive the multi-carrier light of the wave multiplexer output, the increasing
The output port of beneficial unit is used to export multi-carrier light to the input port of the output unit.
Optionally, in conjunction with the first aspect of the embodiment of the present invention and the first embodiment of first aspect, second
In kind embodiment, the overloading wave laser further includes detection unit and control unit；The detection unit is for detecting institute
State the multi-carrier light in loop；Described control unit is used for the testing result according to the detection unit, controls the multiple light
Phase-shifter is learned the phase of the light Jing Guo the multiple optical phase shifter is adjusted；Wherein, described control unit controls at least
The phase of the light Jing Guo the optical phase shifter is adjusted in one optical phase shifter, generates the light by the optical phase shifter
Destructive interference.
Optionally, in conjunction with the first aspect of the embodiment of the present invention and first and second kind of embodiment of first aspect,
Further include one Perot FP etalon of Fabry in three kinds of embodiments, in the loop, the transmission peak wavelength of the FP etalon with
The transmission peak wavelength of the demultiplexer is aligned.
Optionally, in conjunction with the first aspect of the embodiment of the present invention and first, second and third kind of embodiment of first aspect,
It further include Polarization Controller in the loop in the 4th kind of embodiment, the Polarization Controller is for controlling the loop
The polarization direction of middle multi-carrier light.
Optionally, in conjunction with first, second, third and fourth kind of embodiment party of the first aspect of the embodiment of the present invention and first aspect
Formula further includes optical isolator in the loop in the 5th kind of embodiment, and the optical isolator is for controlling the ring
The one-way transmission of multi-carrier light in road.
Optionally, the device in the embodiment of the present invention can be polarization-maintaining device, and the corresponding optical fiber that connects can be polarization-maintaining light
It is fine.
Specifically, as shown in Figure 1, overloading wave laser provided in an embodiment of the present invention include mode locking unit, demultiplexer,
Multiple optical phase shifters, wave multiplexer, gain unit and output unit, wherein Polarization Controller, optoisolator, FP mark in figure
Quasi- tool etc. is selectable unit (SU).
Wherein, optionally, mode locking unit may include electrooptic modulator or acousto-optic modulator, or may include that saturation is inhaled
Medium is received, or may include polarization rotating element.The effect of mode locking unit is locked out the phase of multi-carrier light in loop.Than
Such as, mode locking unit can also include RF signal projector, and corresponding electrooptic modulator can be controlled by RF signal, so that through
It is consistent to cross phase when the multi-carrier light of the electrooptic modulator is emitted the electrooptic modulator.When mode locking unit includes Saturable absorber
Or when polarization rotating element, the mode locking unit can also include control unit, for control corresponding Saturable absorber or partially
The parameter of vibration rotary part, to guarantee to be consistent by the multi-carrier light phase of mode locking unit.
Demultiplexer can be Arrayed Waveguide Grating (Arrayed Waveguide Grating, AWG), can be
MEMS can be micro-loop group in parallel, can also be the devices such as MMI, in the multicarrier for that will input with corresponding output end
The carrier wave output of mouth alignment, filters out unwanted noise light.Optionally, a series of wavelength Xs of demultiplexer output1、λ2、
λ3......λnWavelength interval between adjacent wavelength can be fixed and invariable, i.e. a series of wavelength of fixed intervals.It is optional
, a series of wavelength Xs of demultiplexer output1、λ2、λ3......λnWavelength interval between adjacent wavelength is also possible to adjustable
, for example, increase at each waveguide that can include in AWG when demultiplexer is AWG and adjust electrode, it is defeated by electrode
The current regulation entered can transmit the AWG wavelength and corresponding wavelength interval.
Optionally, optical phase shifter can be electroluminescent variations in refractive index material, or can be electroluminescent length change material,
It perhaps perhaps can be able to be temperature control variations in refractive index material or temperature control length for electroluminescent refractive index and length change material
Change material or temperature control refractive index and length change material.In one embodiment, can by corresponding electrode to
Optical phase shifter applies voltage and finally makes light of the carrier wave in the optical phase shifter to change its refractive index and/or length
Journey changes, to have adjusted the phase of the carrier wave.
Wave multiplexer is used for export photosynthetic of each optical phase shifter and exports.Optionally, wave multiplexer also can have filter
Wave energy, while converging carrier wave, the light that can also be exported to each optical phase shifter is filtered, wherein the conjunction
The transmission peak wavelength of wave device is aligned with the transmission peak wavelength of demultiplexer.Transmission peak wavelength described here is filtered out relative to those
It, can be from the wavelength of the carrier wave of wave multiplexer transparent transmission for wavelength.The transmission peak wavelength of wave multiplexer and the transmission peak wavelength pair of demultiplexer
Standard refers to that the wavelength that can transmit the two is roughly the same.Because its filtering bandwidth of different devices certainly exists narrow difference, work as solution
When multiplexer and wave multiplexer all have filter function, filter effect has a degree of promotion.
Gain unit can be erbium-doped fiber amplifier (Erbium-Doped Fiber Amplifier, EDFA), can be with
For semiconductor optical amplifier (Semiconductor Optical Amplifier, SOA), or other that there is light amplification
The device of function.
Output unit receive loop on multicarrier, a part returned in loop from the first output port, another part from
Multi-carrier light of the second output terminal mouth to multicarrier laser external output lasing.Optionally, output unit can be a function
Rate optical splitter, such as coupler.Optionally, one layer of high-reflecting film can also be plated in the second output terminal mouth of output unit, such as reflected
Rate is greater than 50% high-reflecting film.
It optionally, can also include FP etalon in loop, the transmission peak wavelength of FP etalon is saturating with the demultiplexer
The long alignment of ejected wave.FP etalon is used to carry out thin modeling to a variety of concussion modes in optical loop, realizes the suppression of supermode noise
System only allows the multi-carrier mode of design requirement that can recycle oscillation and export.Specifically, FP etalon has narrower
Transmission bandwidth can cooperate with demultiplexer and wave multiplexer (if any filter function), to generate better modeling
Effect.
Optionally, may include one or more Polarization Controllers in loop, in control loop multi-carrier light it is inclined
Shake direction.
Optionally, it can also include optoisolator in loop, can be used to ensure that multi-carrier light one-way transmission in the loop.
Optionally, overloading wave laser may include control unit.Control unit is connected with the multiple optical phase shifter.
Optionally, control unit can adjust corresponding carrier wave in the loop by way of adjusting the light path of corresponding optical phase shifter
Phase.It optionally, can be adjusting phase by way of controlling on-load voltage size or by way of controlling temperature height
The light path of optical phase shifter is answered, to finally adjust the phase of the carrier wave Jing Guo the optical phase shifter.This adjusting can basis
The parameter saved inside control unit carries out, and includes such as λ when the overloading wave laser needs to export3Multi-carrier light when,
Optional and λ3Corresponding optical phase shifter is adjusted, and the output for exporting a predetermined value controls voltage, to make
Obtain the λ of multicarrier laser output3Light intensity, λ caused by the control voltage with other predetermined values3Light intensity compared to maximum.
When needing to turn off wavelength X3When, optional and λ3Corresponding optical phase shifter is adjusted, and exports the pass of another predetermined value
Disconnected control voltage, so that the λ of overloading wave laser output3Light intensity, λ caused by the control voltage with other predetermined values3's
Light intensity is compared to minimum, or is zero.The control method of the carrier wave of other wavelength, and so on.In this case, control unit
In can save each wavelength, each optical phase shifter, output control voltage, shutdown control voltage between one-to-one correspondence close
System.
Optionally, the overloading wave laser can also include detection unit.Detection unit can separate one from loop
Fraction light is used to detect, or can separate sub-fraction from the multi-carrier light that output unit second output terminal mouth exports and use
In detection.The object of detection can be one or more in following items: the intensity of each wavelength light, overloading in multi-carrier light
The phase of each wavelength light in the glistening light of waves, the interval in multi-carrier light between each adjacent wavelength light, the number of wavelengths in multi-carrier light
Etc..Optionally, detection unit can be photodiode PD, can be used for detecting the respective of each wavelength light in multi-carrier light
Intensity.Control unit is adjusted optical phase shifter according to the testing result of detection unit, so that the result of detection, which meets, to be needed
It asks.In one embodiment, as needed in the multi-carrier light that is emitted comprising wavelength to be λ3Carrier wave, then be adjusted and λ3It is corresponding
Optical phase shifter so that the λ that detection unit detects3Maximum intensity.This adjusting can be the adjusting of " scan-type ", such as
The light path of corresponding optical phase shifter can be adjusted from small to large or from big to small.Optionally, it can be loaded by control
The mode of voltage swing or the light path that corresponding optical phase shifter is adjusted by way of controlling temperature height.In such case
Under, the one-to-one relationship between each wavelength, each optical phase shifter can be saved in control unit.
In the embodiment of the present invention, demultiplexer, multiple optical phase shifters, wave multiplexer are sequentially connected, and mode locking unit, output are single
Member, gain unit, and optional Polarization Controller, optoisolator, FP etalon position in the loop and sequence are variable
, the connection type being not limited in Fig. 1.Control unit is connected with each optical phase shifter, not in the loop.Detection unit can be from
Any position separates part light and is detected in loop, can also separate part light from the second output terminal mouth of output unit and be examined
It surveys.
In the embodiment of the present invention, gain unit can generate spontaneous emission light in power-up.Gain unit in loop to
Spontaneous emission light in loop is constantly amplified, demultiplexer, optical phase shifter, wave multiplexer (when there is filter function), FP
Etalon and loop itself (annular chamber) carry out modeling filtering processing to the spontaneous emission light in loop.Spontaneous emission light warp
It crosses after repeatedly circulation oscillation, in annular chamber, only those can penetrate corresponding filtering device without the wavelength that is filtered out
Signal light is constantly amplified, and the noise light of other wavelength that cannot penetrate respective filter part be then suppressed.Finally, lasing
Multi-carrier light from the second output terminal mouth of output unit export.
In the embodiment of the present invention, phase compensation can be carried out to the carrier wave of needs by adjusting corresponding optical phase shifter,
PGC demodulation is carried out using light of the mode locking unit to the carrier wave simultaneously, so that the light intensity of the carrier wave of the needs obtains in the loop
To maximum amplification, while it ensure that it when exporting overloading wave laser, phase is fixed and invariable, while each
The respective phase of carrier wave is fixed, and the quality of multi-carrier light is higher.In addition, can pass through when not needing the carrier wave of a certain wavelength
The light path of the corresponding optical phase shifter of carrier wave of the wavelength is adjusted, so that the wavelength carrier generates destructive interference in the loop, from
And realize turn-off function.In this way, the interval between the quantity and adjacent carrier of the carrier wave of overloading wave laser output can be with
Flexibly setting, improves the flexibility of overloading wave laser.
In one embodiment, for given mode locking unit modulation parameter, demultiplexer, wave multiplexer and FP etalon
The case where modeling filtering parameter (mode locking unit frequency parameter f, the FSR=f of demultiplexer, wave multiplexer and FP etalon), pass through
The phase compensation and shutdown of flexible configuration optical phase shifter, the present embodiment may be implemented using f frequency as basic interval, can be flexible
The coherent multicarrier at the interval N × f of configuration exports, various configurations such as Fig. 2.
Meanwhile the embodiment of the present invention also provides the generation side of multicarrier corresponding with overloading wave laser provided above
Method.The described method includes: locking the phase of multi-carrier light in the loop using the mode locking unit；Utilize the demultiplexer
Multi-carrier light in loop is filtered, and exports multiple single carrier light that filtering processing obtains；Using the multiple
Optical phase shifter adjusts the phase of the multiple single carrier light；The multiple optical phase shifter is exported using the wave multiplexer
Light carries out multiplex processing；Amplify the multi-carrier light in the loop using the gain unit；It is exported using the output unit
The multi-carrier light that lasing generates in the loop.It is described to adjust the multiple single carrier light using the multiple optical phase shifter
Phase, comprising: detect the multi-carrier light in the loop, or the multicarrier for detecting the second output terminal mouth output
Light；According to the testing result of the detection unit, the multiple optical phase shifter is controlled to by the multiple optical phase shifter
The phase of light be adjusted；Wherein, the multiple optical phase shifter is controlled to the light Jing Guo the multiple optical phase shifter
Phase is adjusted, comprising: and it controls at least one optical phase shifter and the phase of the light Jing Guo the optical phase shifter is adjusted,
The light by the optical phase shifter is set to generate cancellation or constructive interference.
In short, being not intended to limit of the invention the foregoing is merely the preferred embodiment of technical solution of the present invention
Protection scope.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in
Within protection scope of the present invention.
Claims (8)
1. a kind of overloading wave laser, which is characterized in that the overloading wave laser includes the loop for generating multi-carrier light,
It include mode locking unit, demultiplexer, multiple optical phase shifters, wave multiplexer, gain unit and output unit in the loop；
The mode locking unit is used to lock the phase of multi-carrier light in the loop；
The demultiplexer includes input port and multiple output ports, and the demultiplexer to from the input port for connecing
The multi-carrier light received is filtered, and multiple single carrier light that filtering processing is obtained are defeated from the multiple output port
Out, wherein the corresponding single carrier light of each output port in the multiple output port；
The multiple optical phase shifter is connected in a manner of one-to-one with multiple output ports of the demultiplexer, for adjusting
The phase of each single carrier light of input makes each single carrier light by the optical phase shifter generate destructive interference；
Wave multiplexer, the light for exporting to the multiple optical phase shifter carry out multiplex processing；
Gain unit, for receiving the multi-carrier light of the wave multiplexer output, amplification inputs the multi-carrier light of the gain unit；
The input port of output unit, including the first output port, second output terminal mouth and input port, the output unit is used
In receiving the multi-carrier light in the loop, first output port is used to export multi-carrier light to the loop, and described the
Two output ports are used to export the multi-carrier light that lasing generates in the loop to the multicarrier laser external.
2. overloading wave laser according to claim 1, it is characterised in that:
The mode locking unit includes input port and output port, and the input port of the mode locking unit is for receiving from described
The multi-carrier light of first output port of output unit, the output port of the mode locking unit are used to export to the demultiplexer
Multi-carrier light；
The input port of the demultiplexer is used to receive the multi-carrier light of the output port output of the mode locking unit；
The gain unit includes input port and output port, and the input port of the gain unit is for receiving the multiplex
The multi-carrier light of device output, the output port of the gain unit are used to export multicarrier to the input port of the output unit
Light.
3. overloading wave laser according to claim 1 or 2, it is characterised in that:
The overloading wave laser further includes control unit；Described control unit is for controlling the multiple optical phase shifter to warp
The phase for crossing the light of the multiple optical phase shifter is adjusted；Wherein, described control unit controls at least one optical phase shift
The phase of the light Jing Guo the optical phase shifter is adjusted in device, and the light by the optical phase shifter is made to generate destructive interference.
4. overloading wave laser according to claim 3, it is characterised in that:
The overloading wave laser further includes detection unit；
The detection unit is used to detect the multi-carrier light in the loop, or for detecting the second output terminal mouth output
Multi-carrier light；
Described control unit is specifically used for the testing result according to the detection unit, controls the multiple optical phase shifter to warp
The phase for crossing the light of the multiple optical phase shifter is adjusted.
5. overloading wave laser according to claim 1 or 2, it is characterised in that:
It further include Polarization Controller in the loop, the Polarization Controller is used to control the polarization of multi-carrier light in the loop
Direction.
6. overloading wave laser according to claim 1 or 2, it is characterised in that:
It further include optoisolator in the loop, the optoisolator includes input port and output port, wherein from the light
The light that the input port of isolator is input to the optoisolator is exported by the output port of the optoisolator, from the light
The light that the output port of isolator is input to the optoisolator is isolated by the optoisolator.
7. a kind of method for generating multi-carrier light, which is characterized in that be applied in overloading wave laser, the overloading wave laser
It include mode locking unit, demultiplexer, multiple optical phase shifters, conjunction in the loop including the loop for generating multi-carrier light
Wave device, gain unit and output unit, which comprises
The phase of multi-carrier light in the loop is locked using the mode locking unit；
The multi-carrier light in loop is filtered using the demultiplexer, and exports multiple lists that filtering processing obtains
Carrier light；
The phase of the multiple single carrier light is adjusted using the multiple optical phase shifter；
Multiplex processing is carried out to the light that the multiple optical phase shifter exports using the wave multiplexer, is made by the optical phase shifter
Light generate destructive interference；
The multi-carrier light of the wave multiplexer output is received using the gain unit, and amplifies the multi-carrier light in the loop；
The multi-carrier light that lasing generates in the loop is exported using the output unit.
8. according to the method described in claim 7, it is characterized by:
The phase that the multiple single carrier light is adjusted using the multiple optical phase shifter, comprising: detect in the loop
Multi-carrier light, or for detecting the output unit second output terminal mouth output multi-carrier light；According to the detection
The testing result of unit controls the multiple optical phase shifter and adjusts to the phase of the light Jing Guo the multiple optical phase shifter
Section；Wherein, it controls the multiple optical phase shifter the phase of the light Jing Guo the multiple optical phase shifter is adjusted, wrap
It includes: controlling at least one optical phase shifter and the phase of the light Jing Guo the optical phase shifter is adjusted, make by the optics phase
The light for moving device generates destructive interference.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/077714 WO2016172861A1 (en) | 2015-04-28 | 2015-04-28 | Multi-carrier laser and method for generating multi-carrier light |
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|---|---|---|---|---|
| CN1404190A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Optical fiber laser with multi-wavelength output |
| CN101326691A (en) * | 2005-12-08 | 2008-12-17 | 卢森特技术有限公司 | Wide-bandwidth mode-locking laser |
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| JP4389545B2 (en) * | 2003-10-17 | 2009-12-24 | ソニー株式会社 | Transmitting apparatus and transmitting method |
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- 2015-04-28 WO PCT/CN2015/077714 patent/WO2016172861A1/en active Application Filing
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| CN1404190A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Optical fiber laser with multi-wavelength output |
| CN101326691A (en) * | 2005-12-08 | 2008-12-17 | 卢森特技术有限公司 | Wide-bandwidth mode-locking laser |
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| WO2016172861A1 (en) | 2016-11-03 |
| CN107534505A (en) | 2018-01-02 |
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