CN110932065A - Modular high-power erbium-doped fiber amplifier - Google Patents

Modular high-power erbium-doped fiber amplifier Download PDF

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Publication number
CN110932065A
CN110932065A CN201911103304.XA CN201911103304A CN110932065A CN 110932065 A CN110932065 A CN 110932065A CN 201911103304 A CN201911103304 A CN 201911103304A CN 110932065 A CN110932065 A CN 110932065A
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optical
power
erbium
display
cpu
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陈啟义
苏泓
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ZHUHAI BLUEMAX BROADBAND ELECTRONIC Co Ltd
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ZHUHAI BLUEMAX BROADBAND ELECTRONIC Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • 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
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Lasers (AREA)

Abstract

The invention aims to provide a modular high-power optical fiber amplifier which is high in output power, high in integration level, small in occupied space and low in cost. The invention comprises a CPU and a display, a preceding stage optical fiber power amplification module, an optical power controller II, a multimode high-power pump laser, an optical combiner, a double-cladding erbium-ytterbium co-doped optical fiber, a cladding power stripper, a high-power isolator, an optical splitter, an optical detector, a panel control device, a panel display device, an RJ45 interface, a remote control device, an RS232 interface and a state alarm device, wherein the CPU and the display also comprise a display part, and the preceding stage optical fiber power amplification module is an amplification structure and is combined with other parts to form a secondary amplification structure. The invention is applied to the technical field of optical fiber communication.

Description

Modular high-power erbium-doped fiber amplifier
Technical Field
The invention is applied to the technical field of optical fiber communication, and particularly relates to a modular high-power erbium-doped optical fiber amplifier.
Background
With the rapid development of modern optical fiber communication network technology, the cost price of optical fiber is rapidly reduced, and the optical fiber access is a quite favorable condition for global fixed network operators to gradually realize optical fiber access (FTTx) and provide high-speed bandwidth access information transmission network for users. In long-haul fiber optic transmission networks, erbium-doped fiber amplifiers are the primary core devices and are particularly important. The modularized high-power optical fiber amplifier comprises a CPU control center, a 1550nm optical input end is connected with an input end of an isolator, an output end of the isolator is connected with a 1550nm end of a wavelength division multiplexer, a 980nm end of the wavelength division multiplexer is connected with an output end of a low-noise 980nm pump laser, and an output end of the wavelength division multiplexer is connected with a high-absorption erbium-doped optical fiber. The input optical signal passes through the high absorption erbium-doped fiber, erbium ions in the high absorption erbium-doped fiber absorb photon signals excited by a 980nm pump laser, so that ground state electrons are in a high energy state, and the released energy is added to photons of the signal light, thereby realizing the amplification of the signal light, the other end of the high absorption erbium-doped fiber is connected with the input end of a preposed optical amplification optical isolator, the whole of the high absorption erbium-doped fiber forms a pre-stage optical fiber amplification module, the output end of the preposed optical amplification optical isolator is connected with the input end of an optical combiner, the other input end of the beam combiner is connected with the output end of a multimode large-function pump laser, the output end of the beam combiner is connected with a double-clad erbium-ytterbium co-doped fiber, the input optical signal passes through the double-clad erbium-ytterbium co-doped fiber, the erbium-ytterbium ions in the double-clad erbium-ytterbium co-doped fiber absorb photon signals excited by the multimode large-function pump laser, so that the ground state electrons, thereby realizing the amplification of the signal light again. The traditional optical fiber amplifier only adopts a single-stage amplification mode of an erbium-doped optical fiber and a single 980nm pump laser, and can not be subjected to modularization processing. Therefore, the traditional erbium-doped fiber amplifier has the problems of low output power and low integration level, and the cost is higher due to the increase of the installation space of a required machine room by a user.
In summary, the erbium-doped fiber amplifier in the prior art has the problems of low output power, low integration level, and high cost due to the increase of the required installation space of the machine room by the user.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a modular high-power optical fiber amplifier with high output power, high integration level, small occupied space and low cost.
The technical scheme adopted by the invention is as follows: the invention comprises a CPU and a display, a preceding stage optical fiber power amplification module, a second optical power controller, a multimode high-power pump laser, an optical combiner, a double-clad erbium-ytterbium co-doped optical fiber, a clad power stripper, a high-power isolator, an optical splitter, an optical detector, a panel control device, a panel display device, an RJ45 interface, a remote control device, an RS232 interface and a state alarm device, wherein the CPU and the display also comprise a display part, the CPU and the display are respectively and electrically connected with the panel control device, the panel display device, the RJ45 interface, the remote control device, the RS232 interface and the state alarm device, the second optical power controller is electrically connected with the CPU and the display, the multimode high-power pump laser is electrically connected with the second optical power controller, and the CPU and the display are electrically connected with the preceding stage optical fiber power amplification module, the multimode high-power pump laser and the preceding stage optical fiber power amplification module are connected with the optical combiner, the double-clad erbium-ytterbium co-doped optical fiber, the clad power stripper, the high-power isolator, the optical splitter and the optical detector are sequentially connected, and the optical detector is connected with the CPU and displays.
Further, the optical splitter is a multi-path optical splitter.
Further, the preceding stage optical fiber power amplification module comprises a power supply monitor, a temperature controller, a power supply controller, a first optical power controller, a first optical detector, a 980nm pump laser, a pre-optoisolator, a high-absorption erbium-doped optical fiber, a wavelength division multiplexer, a first input-end optoisolator and a first optical splitter, wherein the power supply monitor, the temperature controller, the power supply controller, the first optical power controller and the first optical detector are respectively and electrically connected with the CPU and the display, the temperature controller, the power supply controller and the first optical power controller are respectively connected with the 980nm pump laser, the first optical detector is connected with the first optical splitter, the input-end optoisolator, the wavelength division multiplexer, the high-absorption erbium-doped optical fiber and the pre-optoisolator are sequentially connected, and the 980nm pump laser is connected with the wavelength division multiplexer, the front-end optical isolator is connected with the optical combiner.
Further, the multi-path optical splitter can reach 32 paths at most.
The invention has the beneficial effects that: the invention comprises a CPU and a display, a preceding stage optical fiber power amplification module, a second optical power controller, a multimode high-power pump laser, an optical combiner, a double-clad erbium-ytterbium co-doped optical fiber, a clad power stripper, a high-power isolator, an optical splitter, an optical detector, a panel control device, a panel display device, an RJ45 interface, a remote control device, an RS232 interface and a state alarm device, wherein the CPU and the display also comprise a display part, the CPU and the display are respectively and electrically connected with the panel control device, the panel display device, the RJ45 interface, the remote control device, the RS232 interface and the state alarm device, the second optical power controller is electrically connected with the CPU and the display, the multimode high-power pump laser is electrically connected with the second optical power controller, and the CPU and the display are electrically connected with the preceding stage optical fiber power amplification module, the multimode high-power pump laser and the preceding stage optical fiber power amplification module are connected with the optical combiner, the double-clad erbium-ytterbium co-doped optical fiber, the clad power stripper, the high-power isolator, the optical splitter and the optical detector are sequentially connected, and the optical detector is connected with the CPU and displays. Compared with the closest prior art, the invention integrates the fore-stage optical fiber power amplification component highly in a modularized mode, loads photon signals of the fore-stage optical fiber power amplification module and the multimode high-power pump laser into an input signal through the optical combiner, absorbs the photon signal excited by the multimode high-power pump laser by erbium-ytterbium ions in the double-clad erbium-ytterbium co-doped optical fiber to enable ground-state electrons to be in a high-energy state, and adds the released energy to the photons of the signal light, thereby realizing the secondary amplification of the signal light, and having the advantages of high output power, high integration level, small occupied space and lower cost.
Drawings
Fig. 1 is a block diagram of the circuit structure of the present invention.
Detailed Description
As shown in fig. 1, in this embodiment, the present invention includes a CPU and display 1, a front stage fiber power amplifier module 200, a second optical power controller 3, a multimode high power pump laser 4, an optical combiner 5, a double-clad erbium-ytterbium co-doped fiber 6, a cladding power stripper 7, a high power isolator 8, an optical splitter 9, an optical detector 10, a panel control device 11, a panel display device 12, an RJ45 interface 13, a remote control device 14, an RS232 interface 15, and a status alarm device 16, wherein the CPU and display 1 further includes a display portion, the CPU and display 1 is electrically connected to the panel control device 11, the panel display device 12, the RJ45 interface 13, the remote control device 14, the RS232 interface 15, and the status alarm device 16, the second optical power controller 3 is electrically connected to the CPU and display 1, the multimode high power pump laser 4 is electrically connected to the second optical power controller 3, the CPU and the display 1 are electrically connected to the front stage fiber power amplification module 200, the multimode high-power pump laser 4 and the front stage fiber power amplification module 200 are both connected to the beam combiner 5, the double-clad erbium-ytterbium co-doped fiber 6, the clad power stripper 7, the high power isolator 8, the optical splitter 9, and the optical detector 10 are sequentially connected, and the optical detector 10 is connected to the CPU and the display 1. 1500nm signal light is input into the preceding stage optical fiber power amplification module 200, and is subjected to first signal amplification through the preceding stage optical fiber power amplification module 200, the output end of the preceding stage optical fiber power amplification module 200 is connected with the input end of the optical beam combiner 5, the other input end of the optical beam combiner 5 is connected with the output end of the multimode high-power pump laser 4, the output end of the optical combiner 5 is connected with the double-clad erbium-ytterbium co-doped fiber 6, the input optical signal passes through the double-clad erbium-ytterbium co-doped fiber 6, the erbium ytterbium ion in the double-clad erbium ytterbium co-doped fiber 6 absorbs the photon signal excited by the multimode high-power pump laser 4 to make the ground state electron to be in a high-energy state, and the released energy is added to the photon of the signal light, therefore, the signal light is amplified again, the power of the light signal light can be amplified to 41dBm, and the output power is high; because a secondary amplification form is adopted and the preceding stage optical fiber power amplification module 200 realizes modularization, the space occupancy can be reduced, the integration level is higher and the cost is lower.
In the present embodiment, the optical splitter 9 is a demultiplexer. The erbium ytterbium ions in the double-clad erbium ytterbium co-doped fiber 6 absorb photon signals excited by the multimode high-power pump laser 4, so that ground state electrons reach a high-energy state, released energy is added to photons of signal light, the signal light is amplified again, the power of the light signal light can be amplified to 41dBm, and then the light is split by the optical splitter 9.
In this embodiment, the pre-stage fiber power amplification module 200 includes a power supply monitor 201, a temperature controller 202, a power supply controller 203, a first optical power controller 204, a first optical detector 205, a 980nm pump laser 206, a pre-optoisolator 207, a high-absorption erbium-doped fiber 208, a wavelength division multiplexer 209, an input-end optoisolator 210, and a first optical splitter 211, where the power supply monitor 201, the temperature controller 202, the power supply controller 203, the first optical power controller 204, and the first optical detector 205 are electrically connected to the CPU and the display 1, respectively, the temperature controller 202, the power supply controller 203, and the first optical power controller 204 are connected to the 980nm pump laser 206, the first optical detector 205 is connected to the first optical splitter 211, and the optical splitter, the input-end optoisolator 210, and the wavelength division multiplexer 209 are electrically connected to the first optical power supply monitor 201, the temperature controller 202, the power supply controller 203, and the, The high-absorption erbium-doped fiber 208 and the pre-optical isolator 207 are sequentially connected, the 980nm pump laser 206 is connected with the wavelength division multiplexer 209, and the pre-optical isolator 207 is connected with the optical combiner 5. 1550nm light is input into the input end of the first optical splitter 211, and is connected with the 1550nm end of the wavelength division multiplexer 209 through the output end of the input end optical isolator 210, the 980nm end of the wavelength division multiplexer 209 is connected with the output end of the 980nm pump laser 206 with low noise, and the output end of the wavelength division multiplexer 209 is connected with the high-absorption erbium-doped fiber 209. An input optical signal passes through the high-absorption erbium-doped fiber 209, erbium ions in the high-absorption erbium-doped fiber 209 absorb photon signals excited by the 980nm pump laser 206, ground state electrons are converted into high-energy states, released energy is added to photons of the signal light, and therefore amplification of the signal light is achieved, the other end of the high-absorption erbium-doped fiber 209 is connected with the input end of the preposed optical isolator 207, the front-stage optical fiber amplification module 200 is integrally formed, and then the front-stage optical fiber amplification module is connected with the optical combiner optical isolator 5 through the preposed optical isolator 207, and accordingly communication of the optical signal is achieved.
In this embodiment, the multi-way optical splitter can reach up to 32 ways. The optical splitter 9 can be divided into 32 paths, each port outputs 23dBm, which is equivalent to 32 erbium-doped fiber amplifiers with 23dBm, the combined output of ultrahigh optical power and flexible optical splitters is realized, the average single-port output cost of the same optical power is less than one fifth of that of the traditional erbium-doped fiber amplifier, and the equipment installation space is saved, so that the erbium-ytterbium co-doped fiber amplifier has high output power, low cost and high integration level.
The invention has 1550nm optical input connected to the input end of the said input end isolator 210, the output end of the said input end isolator 210 is connected to 1550nm end of the said wavelength division multiplexer 209, the 980nm end of the said wavelength division multiplexer 209 is connected to the output end of a said 980nm pump laser 206 of a low noise, the output end of the said wavelength division multiplexer 209 is connected to the said high absorption erbium doped fiber 209. An input optical signal passes through the high-absorption erbium-doped fiber 209, erbium ions in the high-absorption erbium-doped fiber 209 absorb a photon signal excited by the 980nm pump laser 206 to convert ground state electrons into a high energy state, and the released energy is added to photons of the signal light, so as to amplify the signal light, the other end of the high-absorption erbium-doped fiber 209 is connected with an input end of the pre-optical isolator 207, an output end of the pre-optical isolator 207 is connected with an input end of the optical combiner 5, the other input end of the optical combiner 5 is connected with an output end of the multimode high-power pump laser 4, an output end of the optical combiner 5 is connected with the double-clad erbium-ytterbium co-doped fiber 6, the input optical signal passes through the double-clad erbium-ytterbium co-doped fiber 6, erbium ions in the double-clad ytterbium co-doped fiber 6 absorb the photon signal excited by the multimode high-power pump laser 4, the ground state electrons are brought to a high energy state and the released energy is added to the photons of the signal light, thereby realizing the amplification of the signal light again. The high-power erbium-ytterbium co-doped optical fiber amplifier (namely, a secondary amplification structure) is controlled by the MCU microprocessor, corresponding working parameters can be visually and clearly displayed on the state monitoring display screen unit, the SBS value of the 1550nm external modulation optical transmitter can be set, and the output optical power of the high-power erbium-ytterbium co-doped optical fiber amplifier can be adjusted through a front panel key or a remote network management operating system to achieve the design value required by the fiber-input optical power.
The high-power erbium-ytterbium co-doped fiber amplifier requires lower pump light power but has quite high pump efficiency; the invention is a main core technology of a high-power erbium-ytterbium co-doped fiber amplifier which realizes high-efficiency conversion by the high absorption characteristic of a double-clad erbium-ytterbium co-doped fiber of the optical power of a multimode high-power pump laser; thereby reducing cost and improving reliability and stability.
Therefore, the modular high-power optical fiber amplifier has the following advantages:
1. and controlling various working parameter units by using the MCU: the optical power of input and output, bias current of the pump laser, backlight power, temperature and refrigeration current are tracked and tested, and the test result is fed back to pass through an optical power controller (APC) and a temperature electronic refrigeration controller (TEC), so that the optimal stable optical signal is output through an output port.
2. The microprocessor controls the working state of the whole machine, monitors the display screen to clearly display various parameters, and has convenient and visual operation and stable performance.
3. The optical power of a low-noise 980nm pump laser is converted with high efficiency through a high-absorption erbium-doped fiber, the optical power of a multimode high-power pump laser is converted with high efficiency through a double-cladding erbium-ytterbium co-doped fiber, after modularization processing, the optical power of an optical signal can be amplified to 41dBm, the output end of the multimode high-power pump laser is connected with a 32-path equalizing optical divider, each port outputs 23dBm which is equivalent to 32 23dBm traditional erbium-doped fiber amplifiers, ultrahigh optical power and flexible optical divider are combined to output, the average single-port output cost of the same optical power is less than one fifth of that of the traditional optical amplifier, the equipment installation space is saved, the cost is reduced, and the reliability and the stability are improved.
4. The high-power erbium-ytterbium co-doped fiber amplifier has the advantages of low noise, low distortion, wide frequency band, high integration level and stable output power, and the total power can reach 41 dBm.
While the embodiments of the present invention have been described in terms of practical embodiments, they are not to be construed as limiting the meaning of the present invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.

Claims (4)

1. Modularized high-power erbium-doped fiber amplifier, including CPU and demonstration (1), preceding stage fiber power amplification module (200), optical power controller two (3), multimode high-power pump laser (4), beam combiner (5), double-cladding erbium ytterbium co-doped fiber (6), cladding power stripper (7), high power isolator (8), optical splitter (9), optical detector (10), panel control device (11), panel display device (12), RJ45 interface (13), remote control device (14), RS232 interface (15), state alarm device (16), its characterized in that: the CPU and the display (1) further comprise a display part, the CPU and the display (1) are respectively and electrically connected with the panel control device (11), the panel display device (12), the RJ45 interface (13), the remote control device (14), the RS232 interface (15) and the state alarm device (16), the second optical power controller (3) is electrically connected with the CPU and the display (1), the multimode high-power pump laser (4) is electrically connected with the second optical power controller (3), the CPU and the display (1) are electrically connected with the preceding stage optical fiber power amplification module (200), the multimode high-power pump laser (4) and the preceding stage optical fiber power amplification module (200) are both connected with the optical combiner (5), and the optical combiner (5), the double-clad ytterbium co-doped optical fiber (6), the clad power stripper (7), The high-power isolator (8), the optical splitter (9) and the optical detector (10) are sequentially connected, and the optical detector (10) is connected with the CPU and the display (1).
2. The modular high power erbium-doped fiber amplifier according to claim 1, characterized in that: the optical splitter (9) is a multi-path optical splitter.
3. The modular high power erbium-doped fiber amplifier according to claim 1, characterized in that: the pre-stage optical fiber power amplification module (200) comprises a power supply monitor (201), a temperature controller (202), a power supply controller (203), a first optical power controller (204), a first optical detector (205), a 980nm pump laser (206), a pre-optical isolator (207), a high-absorption erbium-doped optical fiber (208), a wavelength division multiplexer (209), an input end optical isolator (210) and a first optical splitter (211), wherein the power supply monitor (201), the temperature controller (202), the power supply controller (203), the first optical power controller (204) and the first optical detector (205) are respectively and electrically connected with the CPU and the display (1), the temperature controller (202), the power supply controller (203) and the first optical power controller (204) are respectively connected with the 980nm pump laser (206), and the first optical detector (205) is connected with the first optical splitter (211), the optical splitter, the input end optical isolator (210), the wavelength division multiplexer (209), the high-absorption erbium-doped fiber (208) and the pre-optical isolator (207) are sequentially connected, the 980nm pump laser (206) is connected with the wavelength division multiplexer (209), and the pre-optical isolator (207) is connected with the optical combiner (5).
4. The modular high power erbium-doped fiber amplifier according to claim 2, characterized in that: the multi-path optical splitter can reach 32 paths at most.
CN201911103304.XA 2019-11-13 2019-11-13 Modular high-power erbium-doped fiber amplifier Pending CN110932065A (en)

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CN110932065A true CN110932065A (en) 2020-03-27

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Application publication date: 20200327