CN102523540B - Optical module and passive optical network with same - Google Patents
Optical module and passive optical network with same Download PDFInfo
- Publication number
- CN102523540B CN102523540B CN201110457829.0A CN201110457829A CN102523540B CN 102523540 B CN102523540 B CN 102523540B CN 201110457829 A CN201110457829 A CN 201110457829A CN 102523540 B CN102523540 B CN 102523540B
- Authority
- CN
- China
- Prior art keywords
- optical
- optical module
- wavelength
- temperature controller
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses an optical module and a passive optical network with the same. The optical module comprises a master control unit, an optical emitting component integrate with a temperature controller, a temperature controller driving unit and a wavelength tuning unit. By the wavelength tuning unit and the temperature controller driving unit in the optical module, the emitting wavelength of the optical module can be conveniently adjusted by the master control unit of the optical module, wavelength adjustment manner is simple, and difficulty and cost for building the network by optical modules are reduced.
Description
Technical field
The present invention relates to technical field of photo communication, specifically, relate to a kind of optical module of tunable wave length and there is the EPON of this optical module.
Background technology
EPON (PON) is a kind of Optical Fiber Transmission and access technology of point-to-multipoint, originate from the mid-90, along with the evolution of PON technology, the technology such as broadband passive optical network (BPON), ethernet passive optical network (EPON) and gigabit passive optical network (GPON) are progressively there is.EPON, because its broadband, service integration, the flexibly advantage such as networking capability, low cost, obtains and develops rapidly, and EPON conventional is at present EPON and GPON.
For EPON and GPON technology, be mostly adopt time division multiple access multiplexing (TDM) technology at present, the demand that user bandwidth increases rapidly can not be met well.And, because the single fiber access capacity of EPON and GPON is restricted (only having 32 lines or 64 lines at present), when central office terminal room is transregional arrange time, need to lay tens of core fibre and connect span in the optical line terminal OLT of 10 ~ 40km and optical network unit ONU, not only construction cost and maintenance cost high, and the fine resource-constrained contradiction of access tube linear light can be faced.PON based on wavelength division multiple access multiplexing (WDM) technology is a kind of multiplexing scheme having more advantage, the program realizes multiplexing by carrying multiple wavelength system on an optical fiber, an optical fiber can be converted to many " virtual " optical fiber, every bar virtual fiber works alone on different wave length, drastically increases the transmission capacity of optical fiber.Due to economy and the validity of WDM technology, make it the Main Means becoming the dilatation of current optical fiber communication network.
Adopt in the PON system of WDM, the emission wavelength of each OLT optical module and ONU optical module needs different, and is transmitted respectively by different optical channels.Accordingly, prior art is generally adopted and is realized in two ways: the first, directly adopts the optical module that the optical assembly with wavelength selection function is formed.Because optical module self has wavelength selection function, the optical module of same structure and function can be adopted to dispose the ONU of user side, can ensure that different optical module sends the light signal of different wave length.But due to the optical assembly with wavelength selection function, prices are rather stiff, is not adapted at using in the ONU optical module of user side, thus can not extensively promotion and application.Second, a fixed wave length is distributed to each ONU optical module, the ONU for each user side is then needed to select an optical module with specific reception wavelength, have how many ONU, just need the optical module selecting how many kinds of different structure and function, and each optical module dispose time will with the port one_to_one corresponding of optical multiplexer part, thus cause not only networking complicated, and install, safeguard all inconvenient, and due to used optical module disunity, cause stock and management cost greatly to increase.
Summary of the invention
An object of the present invention is to provide a kind of optical module, by arranging wavelength tuning unit and temperature controller driver element in optical module, the adjustment of optical module emission wavelength can be realized conveniently by the main control unit of optical module, wavelength adjustment mode is simple, reduces the difficulty and the cost that utilize optical module to set up optical-fiber network.
For achieving the above object, the present invention adopts following technical proposals to be achieved:
A kind of optical module, comprise main control unit and the light emission component being integrated with temperature controller, also comprise temperature controller driver element and wavelength tuning unit, wavelength tuning unit comprises the first amplifier subelement and the second amplifier subelement, the first input end of the first amplifier subelement connects the temperature control signals output of main control unit by resistance pressure-dividing network, the output of the first amplifier subelement connects its first input end by voltage feedback circuit on the one hand, connect the drive current control end of temperature controller driver element on the other hand, second input of the first amplifier subelement connects the output of the second amplifier subelement, the first input end of the second amplifier subelement connects the temperature feedback terminal of light emission component, the temperature controller drive current output of temperature controller driver element connects the temperature controller drive current input of light emission component.
Above-mentioned optical module provided by the present invention consists of the structure of the temperature of light emission component being carried out to reaction type control main control unit, temperature controller driver element, wavelength tuning unit and light emission component, not only can adjust temperature, and the constant of temperature can be kept; And due to the wavelength of light emission component utilizing emitted light signal and temperature one_to_one corresponding, and then realize adjusting its emission wavelength by the adjustment of light emission component temperature, thus realize the wavelength division multiplexing of multiple optical module by simple structure, be conducive to the difficulty and the cost that reduce optical module networking.
Optical module as above, described temperature controller is preferably semiconductor cooler.
Optical module as above, the first input end of described first amplifier subelement is inverting input, described voltage feedback circuit is voltage negative feedback circuit, voltage negative feedback circuit comprises the first electric capacity, the second electric capacity and the first resistance, parallel circuits is formed with the second Capacitance parallel connection after first electric capacity and the first resistant series, parallel circuits one end connects the inverting input of the first amplifier subelement, and the other end connects the output of the first amplifier subelement.
Optical module as above, for ensureing that rapid feedback is to reach equalized temperature, to prevent self-oscillation again simultaneously, described first capacitor's capacity is preferably 10uF, and the capacitance of the second electric capacity is preferably 22nF, and the resistance of the first resistance is preferably 100
.
Optical module as above, the temperature controller drive current output of described temperature controller driver element is connected with the temperature controller drive current input of described light emission component by filter inductance, to ensure the pure of temperature controller driving current signal.
Optical module as above, the fluctuation of the wavelength of optical signal causing light emission component to launch for preventing supply power voltage change, a point of pressure side of described potential-divider network is also connected with reference voltage input terminal (REF4V5), and reference voltage input terminal is also connected to the temperature feedback end of light emission component by current-limiting resistance (R51).
Optical module as above, described main control unit preferably adopts single-chip microcomputer to realize; When adopting single-chip microcomputer as main control unit, described temperature control signals output is the digital-to-analogue conversion output of single-chip microcomputer.
Two of object of the present invention is to provide simple, the easy realization of a kind of structure, the EPON based on wavelength-division multiplex technique with low cost.
For achieving the above object, the present invention adopts following technical proposals to realize:
A kind of EPON, comprises optical line terminal, optical cable and optical network unit; Optical line terminal includes several OLT optical modules, optical network unit includes several ONU optical modules, optical cable one end is connected to several OLT optical modules by the first smooth multiplexer and demultiplexer part, the other end is connected to several ONU optical modules by the second smooth multiplexer and demultiplexer part, and the optical module that OLT optical module and ONU optical module provide for above-mentioned first goal of the invention.
Three of object of the present invention be to provide a kind of structure simple, easily realize, the EPON of wavelength-division with low cost and time division mixed multiplexing.
For achieving the above object, the present invention adopts following technical proposals to realize:
A kind of EPON, comprise optical line terminal, optical cable and optical network unit, optical line terminal includes several OLT optical modules, optical cable one end is connected to several OLT optical modules by the first smooth multiplexer and demultiplexer part, the other end is connected with several spectrometers by the second smooth multiplexer and demultiplexer part, the other end of each spectrometer is connected with several optical network units ONU optical module, and OLT optical module and the optical module of ONU optical module according to any one of the claims 1 to 6.
EPON as above, for making full use of OLT optical module, increasing the quantity of ONU in optical-fiber network, the quantity of described OLT optical module is preferably equal with the quantity of described spectrometer.
Compared with prior art, advantage of the present invention and good effect are:
1, the present invention by setting up wavelength tuning unit in optical module, and utilize main control unit and temperature controller driver element and wavelength tuning unit to form temperature feedback formula control structure, not only can adjust the temperature of light emission component in optical module, and the constant of temperature can be kept; And due to the wavelength of light emission component utilizing emitted light signal and temperature one_to_one corresponding, and then realize adjusting its emission wavelength by the adjustment of light emission component temperature, wavelength adjust structure is simple, easily realize, cost is lower.
2, utilize optical module of the present invention to set up EPON, wavelength division multiplexing and wavelength-division and time division mixed multiplexing can be realized flexibly, and reduce networking complexity, difficulty and cost.
After reading the specific embodiment of the present invention by reference to the accompanying drawings, the other features and advantages of the invention will become clearly.
Accompanying drawing explanation
Fig. 1 is the theory diagram of an optical module of the present invention embodiment;
Fig. 2 is Fig. 1 embodiment medium wavelength tuner control circuit physical circuit schematic diagram;
Fig. 3 is the circuit theory diagrams that in Fig. 1 embodiment, transmitter control circuit one is concrete;
Fig. 4 is the circuit theory diagrams that in Fig. 1 embodiment, receiver control circuit one is concrete;
Fig. 5 is the network architecture diagram of an EPON of the present invention embodiment;
Fig. 6 is the network architecture diagram of another embodiment of EPON of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail.
Please refer to Fig. 1, this figure is depicted as the theory diagram of an optical module of the present invention embodiment.
This embodiment is for the ONU optical module of optical network unit end, and as shown in Figure 1, optical module includes light emission component 11 and optical fiber receive module 12, wherein, is integrated with temperature controller in light emission component 11.Wherein, temperature controller can and preferably adopt semiconductor cooler to realize.
Light emission component 11 is connected with transmitter control circuit 14, transmitter control circuit 14 provides drive current and the modulated current of burst mode for light emission component 11, and control by the burst enable signal that the main control unit 13 on mainboard inputs, realize the transfer of data of uplink burst; Meanwhile, the main control unit 13 in real time luminous power of monitor optical emitting module 11 and drive current.The circuit structure that transmitter control circuit 14 can adopt prior art conventional, such as, can adopt the circuit theory diagrams shown in Fig. 3 to realize.
Optical fiber receive module 12 is connected with receiver control circuit 16, and this receiver control circuit 16 is continuous operation mode, comprises amplitude limiting amplifier circuit and provides the booster circuit of voltage for optical fiber receive module 12.After the light signal received is converted into the signal of telecommunication by optical fiber receive module 12, inputs to limiting amplifier and carry out amplification output; Meanwhile, main control unit 13 monitors received optical power in real time.The circuit structure that receiver control circuit 16 can adopt prior art conventional, such as, can adopt the circuit theory diagrams shown in Fig. 4 to realize.
In addition, for realizing adjusting the wavelength that light emission component 11 transmits, this embodiment also includes the wavelength tuning control circuit 15 be connected with light emission component 11.Wavelength tuning control circuit, under the control of main control unit 13, controls the temperature of light emission component 11, and its temperature stabilization can be made in set point.Because the wavelength of light emission component 11 luminescence changes along with its temperature difference, so different desired temperatures can make light emission component 11 send the light of different wave length, thus by the control realization of temperature, the wavelength that light emission component 11 transmits is controlled, realize the tuning of wavelength.Wavelength tuning control circuit 15 can adopt the circuit theory diagrams shown in Fig. 2 to realize.
Please refer to Fig. 2, the figure shows a physical circuit schematic diagram of Fig. 1 embodiment medium wavelength tuner control circuit.
As shown in Figure 2, the temperature controller driver element that the wavelength tuning control circuit shown in this figure includes temperature controller driving chip U11 and corresponding peripheral circuit formation thereof and the wavelength tuning unit be made up of the first amplifier chip U10, the second amplifier chip U15 and corresponding peripheral circuit thereof.
Wherein, the inverting input pin4 of the first amplifier chip U10 is connected to the temperature control signals output end p in7 of the single-chip microcomputer U6 forming optical module main control unit by the resistance pressure-dividing network be made up of resistance R58, R48, R42 and R53; Input pin1 mono-aspect of U10 connects the inverting input pin4 of U10 by voltage feedback circuit, connect the drive current control end of temperature controller driving chip U11 on the other hand; The in-phase input end pin3 of U10 connects the output end p in1 of the second amplifier chip U15, and the in-phase input end pin3 of U15 connects the temperature feedback end of light emission component TOSA.And the temperature controller drive current output end p in1 of temperature controller driving chip U11 and pin15 directly or be connected to temperature controller drive current input pin2 and pin1 of light emission component TOSA respectively by filter inductance SI1 and SI2.By arranging the resistance pressure-dividing network of resistance R58, R48, R42 and R53 composition, can the wavelength regulation scope of control TOSA luminescence.Resistance pressure-dividing network, except can adopting the structure of Fig. 2, also can adopt other forms of structure, and the amplitude of the temperature control signals that specifically can export according to wavelength regulation scope and single-chip microcomputer U6 is selected.
In this embodiment, due to using the inverting input pin4 of the first amplifier chip U10 as control signal input, so the output end p in1 of U10 is connected to inverting input pin4 by voltage negative feedback circuit.Voltage negative feedback circuit comprises the first electric capacity C50, the second electric capacity C49 and the first resistance R63, wherein, first electric capacity C50 is in parallel with the second electric capacity C49 again after connecting with the first resistance R63 forms parallel circuits, parallel circuits one end connects the inverting input pin4 of U10, and the other end connects the output end p in1 of U10.And in this embodiment, for ensureing that the temperature of light emission component TOSA can reach balance fast, prevent again circuit from producing self-oscillation, the capacitance of electric capacity C50 is preferably 10uF, and the capacitance of electric capacity C49 is preferably 22nF, and the resistance of resistance R63 is preferably 100 simultaneously
, to be optimized whole circuit.
The operation principle that above-mentioned wavelength tuning control circuit carries out tuning control to the emission wavelength of light emission component TOSA is as follows: when will select specific emission wavelength to ONU optical module according to the demand of network design and optical network unit, according to the relation of the wavelength preset and corresponding controling parameters, the digital-to-analogue conversion output end p in7 of control single chip computer U6 exports the temperature control signals WAVELENGTH corresponding with desired wavelengths, and this control signal is a voltage signal.This temperature control signals inputs to the inverting input of the first amplifier chip U10 by resistance pressure-dividing network, and the output signal of the output of U10 is changed, and also namely VCTL1 signal changes.Because VCTL1 signal connects the drive current control end of temperature controller driving chip U11, U11 will according to this calculated signals temperature controller drive current, and exported to temperature controller drive current input pin2 and pin1 of TOSA by itself pin1 and pin15, and then integrated temperature controller work in control TOSA, to regulate the internal temperature of TOSA.Thermistor integrated in TOSA plays the effect of temperature sensor, the temperature transition of TOSA inside can be become corresponding voltage signal, and exports RTH signal by the temperature feedback end of itself pin8 and pin9.This RTH signal inputs to the in-phase input end pin3 of the second amplifier chip U15 as a feedback signal, amplifies and after buffering, export from the output end p in1 of U15 the feedback voltage signal VRTH be directly proportional to RTH through U15.And this feedback voltage signal VRTH inputs to the in-phase input end of the first amplifier chip U10, as the in-phase input end signal of U10.According to the degenerative principle of amplifier, when the in-phase input end pin3 of U10 input voltage should equal with the input voltage of its inverting input pin4 time, the poised state that whole optical module reaches final can be made, now, the temperature of TOSA is by set point corresponding for the temperature control signals WAVELENGTH be stabilized in single-chip microcomputer U6 exports.TOSA is working under desired temperature, can send the light signal of setting wavelength.Export different temperature control signals WAVELENGTH by control single chip computer U6, the light signal of different wave length can be sent by control TOSA, thus it is tuning to achieve TOSA emission wavelength.Whole wavelength detune circuit structure is simple, tuning process convenient, tuning result is stablized, and performance is higher, and cost is lower.
In addition, in this embodiment, for preventing the fluctuation of the wavelength of optical signal causing TOSA to launch because of system power supply change in voltage, divider resistance R58 point of pressure side place in potential-divider network is also connected with the input of reference voltage REF4V5, and the input of this reference voltage REF4V5 is also connected to the temperature feedback end of light emission component TOSA by current-limiting resistance R51.
What above-described embodiment adopted the is temperature control signals of single-chip microcomputer U6 inputs to the inverting input of the first amplifier chip, the first amplifier chip adopts negative voltage feedback circuit structure, but be not limited to this, also can adopt in-phase input end temperature control signals being inputed to the first amplifier chip, if correspondingly adjust its Voltage Feedback structure and with the terminal annexation of the second amplifier chip U15 and temperature controller driving chip U11, ensure to realize the course of work described above.
The wavelength tuning control circuit of this embodiment not only can be applied in the ONU optical module of optical network unit end, also can be applied in the OLT optical module of optical line terminal.
Please refer to Fig. 3, the figure shows a physical circuit schematic diagram of transmitter control circuit in Fig. 1 embodiment, these circuit theory diagrams are circuit structures for ONU optical module transmitter control circuit used.
As shown in Figure 3, the structure and working principle of transmitter control circuit is summarized as follows: the armed signal of telecommunication is coupled in burst mode driving chip U1 by coupling capacitance C2 and C8, forms level match network carry out mating of system signal output level and driving chip incoming level through resistance R6, R7, R8 and R9.A drive singal output end p in17 of chip U1 is connected to the positive pole LD+ of light emission component TOSA by resistance R10 and diode D1, and another drive singal output end p in16 is connected to the negative pole LD-of TOSA by resistance R11, to provide the loading of modulated current, the i.e. data of TOSA.Meanwhile, the LD-of TOSA is connected to the bias current output end p in14 of U1 by the parallel circuits that resistance R37 and inductance L 10 are formed, with by U1 for TOSA provides bias current.Other peripheral circuit structures and function thereof are prior art, are not described specifically at this.
Please refer to Fig. 4, the figure shows a physical circuit schematic diagram of receiver control circuit in Fig. 1 embodiment, these circuit theory diagrams are also circuit structures for ONU optical module receiver control circuit used.
As shown in Figure 4, the structure and working principle of receiver control circuit is summarized as follows: optical fiber receive module ROSA receiving optical signals is also converted to signal of telecommunication output, this signal of telecommunication is input in limited range enlargement and clock and data recovery chip U9 through coupling capacitance C36 and C38, after the process of U9 limited range enlargement, by differential electric signal output end p in15 and the pin16 output of U9.Other peripheral circuit structures and function thereof are prior art, are not described specifically at this.
The above-mentioned optical module with wavelength tuning function can be used for setting up based on the EPON of wavelength-division multiplex technique, also can be used for setting up the EPON of wavelength-division and time division mixed multiplexing.
Please refer to Fig. 5, the figure shows the network architecture diagram of an EPON of the present invention embodiment.The EPON of this embodiment be adopt that the optical module shown in Fig. 1 to Fig. 4 builds, based on an EPON of wavelength-division multiplex technique.
As shown in Figure 5, the EPON of this embodiment comprises optical line terminal, optical cable and optical network unit, and optical line terminal includes n OLT optical module, is respectively OLT1, OLT2 ..., OLTn, optical network unit includes n ONU optical module, be respectively ONU1, ONU2 ..., ONUn.N OLT optical module is connected with optical cable 54 by the first smooth multiplexer and demultiplexer part 51, and then connects the second smooth multiplexer and demultiplexer part 52 being positioned at optical network unit end through optical cable 54, and the other end of the second smooth multiplexer and demultiplexer part 52 connects n ONU optical module.Each OLT optical module and each ONU optical module all adopt the circuit structure of tunable wave length described above to realize wavelength tuning, specifically:
For descending, OLT1 emission wavelength is
light signal, OLT2 emission wavelength is
light signal ... OLTn emission wavelength is
light signal, carry different business and data respectively.The light signal of n OLT optical module transmitting is coupled in an optical cable 54 by the first smooth multiplexer and demultiplexer part 51, by being arrived the ONU optical module of optical network unit end after long range propagation again by the second smooth multiplexer and demultiplexer part 52, the signal of different wave length arrives ONU optical module that is different, that specify.Because the emission wavelength of each OLT optical module can adjust, so when networking without the need to the port one_to_one corresponding by OLT optical module and light multiplexer and demultiplexer part 51, thus reduce the difficulty of networking.Only need the main control unit by controlling optical module to send control command in use and the emission wavelength of OLT optical module can be adjusted to the wavelength corresponding with light multiplexer and demultiplexer part 51 port, use and convenience.
For up, ONU1 emission wavelength is
light signal, ONU2 emission wavelength is
light signal ... ONUn emission wavelength is
light signal, carry different business and data respectively, realize the uplink of different wave length light signal according to the course of work being similar to OLT optical module.
In this embodiment, the quantity of OLT optical module is equal with the quantity of ONU optical module, can maximally utilise optical module resource, the scale of expandable passive optical network.
Please refer to Fig. 6, the figure shows the network architecture diagram of another embodiment of EPON of the present invention.The EPON of this embodiment be adopt that the optical module shown in Fig. 1 to Fig. 4 builds, based on an EPON of wavelength-division and time division mixed multiplexing technology.
As shown in Figure 6, the EPON of this embodiment comprises optical line terminal, optical cable and optical network unit, and optical line terminal includes n OLT optical module, is respectively OLT1, OLT2 ..., OLTn.Optical cable 65 one end is connected to n OLT optical module by the first smooth multiplexer and demultiplexer part 61, the other end is connected with n spectrometer 63 to 6n by the second smooth multiplexer and demultiplexer part 62, the other end of each spectrometer is connected to 32 optical network unit ONU optical modules, like this, 32*n ONU optical module is included in whole EPON altogether.Each OLT optical module adopts the circuit structure of tunable wave length described above to realize wavelength tuning, and wherein, OLT1 emission wavelength is
light signal, OLT2 emission wavelength is
light signal ... OLTn emission wavelength is
light signal.Each ONU optical module also adopts the circuit structure of tunable wave length described above to realize wavelength tuning, only, 32 ONU optical modules that each spectrometer connects adopt a wavelength, form the time division multiplex network with a wavelength, like this, n spectrometer includes the time division multiplex network of n wavelength altogether.The course of work of the EPON of this embodiment is as follows:
For descending, OLT1 emission wavelength is
light signal, OLT2 emission wavelength is
light signal ... OLTn emission wavelength is
light signal, carry different business and data respectively.The light signal of n OLT optical module transmitting is coupled in an optical cable 65 by the first smooth multiplexer and demultiplexer part 61, by the second smooth multiplexer and demultiplexer part 62 arriving optical network unit end after long range propagation, light signal is demultiplexing as n wavelength again, thus realizes the downlink transfer of wave division multiplex mode.Then, each wavelength is a corresponding time division multiplex network be made up of 32 ONU optical modules of spectrometer and connection thereof respectively, thus realizes the hybrid multiplex of wavelength-division and time-division, not only extends the quantity of the ONU optical module that optical network unit end configures, and networking is easy, easy to use.
For up, wavelength is
32 ONU be transferred in connected spectrometer 63 by time division multiplexing mode, after spectrometer 63 is coupled, transfer to the corresponding port of the second smooth multiplexer and demultiplexer part 62 ..., wavelength is
32 ONU be transferred in connected spectrometer 64 by time division multiplexing mode, after spectrometer 63 is coupled, transfer to the corresponding port of the second smooth multiplexer and demultiplexer part 62.Then, n wavelength is multiplexed in optical cable 65 by wave division multiplex mode by the second smooth multiplexer and demultiplexer part 62 again, is transferred to optical line terminal.At optical line terminal, upward signal is demultiplexing as the light signal of n wavelength through the first smooth multiplexer and demultiplexer part 61, and arrives corresponding OLT module respectively, realizes the transmission of upward signal.
In this embodiment, for making full use of OLT optical module, increasing the quantity of ONU in optical-fiber network, the quantity of OLT optical module is equal with the quantity of spectrometer.But being not limited thereto, also can be the quantity that the quantity of spectrometer is less than OLT optical module.
In above-mentioned Fig. 5 and Fig. 6 two EPON embodiments, the first smooth multiplexer and demultiplexer part 51,61 and the second smooth multiplexer and demultiplexer part 52,62 all preferably adopt array waveguide grating to realize.
Above embodiment only in order to technical scheme of the present invention to be described, but not is limited; Although with reference to previous embodiment to invention has been detailed description, for the person of ordinary skill of the art, still can modify to the technical scheme described in previous embodiment, or equivalent replacement is carried out to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the present invention's technical scheme required for protection.
Claims (8)
1. an optical module, comprise main control unit and the light emission component being integrated with temperature controller, it is characterized in that, also comprise temperature controller driver element and wavelength tuning unit, wavelength tuning unit comprises the first amplifier subelement and the second amplifier subelement, the first input end of the first amplifier subelement connects the temperature control signals output of main control unit by resistance pressure-dividing network, the output of the first amplifier subelement connects its first input end by voltage feedback circuit on the one hand, connect the drive current control end of temperature controller driver element on the other hand, second input of the first amplifier subelement connects the output of the second amplifier subelement, the first input end of the second amplifier subelement connects the temperature feedback end of light emission component, the temperature controller drive current output of temperature controller driver element connects the temperature controller drive current input of light emission component,
Main control unit adopts single-chip microcomputer to realize, the temperature control signals output of main control unit is the digital-to-analogue conversion output of single-chip microcomputer, when specific emission wavelength being selected to optical module according to the demand of network design and optical network unit, according to the relation of the wavelength preset and corresponding controling parameters, the digital-to-analogue conversion output of control single chip computer exports the temperature control signals corresponding with desired wavelengths, and this temperature control signals inputs to the first amplifier subelement through resistance pressure-dividing network;
The first input end of described first amplifier subelement is inverting input, described voltage feedback circuit is voltage negative feedback circuit, voltage negative feedback circuit comprises the first electric capacity, the second electric capacity and the first resistance, parallel circuits is formed with the second Capacitance parallel connection after first electric capacity and the first resistant series, parallel circuits one end connects the inverting input of the first amplifier subelement, and the other end connects the output of the first amplifier subelement.
2. optical module according to claim 1, is characterized in that, described temperature controller is semiconductor cooler.
3. optical module according to claim 1, is characterized in that, described first capacitor's capacity is 10uF, and the capacitance of described second electric capacity is 22nF, and the resistance of described first resistance is 100k Ω.
4. optical module according to claim 1, is characterized in that, the temperature controller drive current output of described temperature controller driver element is connected with the temperature controller drive current input of described light emission component by filter inductance.
5. optical module according to any one of claim 1 to 4, is characterized in that, a point of pressure side of described potential-divider network is also connected with reference voltage input terminal, and reference voltage input terminal is also connected to the temperature feedback end of light emission component by current-limiting resistance.
6. an EPON, comprise optical line terminal, optical cable and optical network unit, it is characterized in that, optical line terminal includes several OLT optical modules, optical network unit includes several ONU optical modules, optical cable one end is connected to several OLT optical modules by the first smooth multiplexer and demultiplexer part, and the other end is connected to several ONU optical modules by the second smooth multiplexer and demultiplexer part, and OLT optical module and the optical module of ONU optical module according to any one of the claims 1 to 5.
7. an EPON, comprise optical line terminal, optical cable and optical network unit, it is characterized in that, optical line terminal includes several OLT optical modules, optical cable one end is connected to several OLT optical modules by the first smooth multiplexer and demultiplexer part, the other end is connected with several spectrometers by the second smooth multiplexer and demultiplexer part, the other end of each spectrometer is connected with several optical network units ONU optical module, and OLT optical module and the optical module of ONU optical module according to any one of the claims 1 to 5.
8. EPON according to claim 7, is characterized in that, the quantity of described OLT optical module is equal with the quantity of described spectrometer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170966.4A CN104796800B (en) | 2011-12-31 | 2011-12-31 | Optical module and the passive optical network with the optical module |
| CN201110457829.0A CN102523540B (en) | 2011-12-31 | 2011-12-31 | Optical module and passive optical network with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457829.0A CN102523540B (en) | 2011-12-31 | 2011-12-31 | Optical module and passive optical network with same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510170966.4A Division CN104796800B (en) | 2011-12-31 | 2011-12-31 | Optical module and the passive optical network with the optical module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102523540A CN102523540A (en) | 2012-06-27 |
| CN102523540B true CN102523540B (en) | 2015-03-25 |
Family
ID=46294313
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510170966.4A Active CN104796800B (en) | 2011-12-31 | 2011-12-31 | Optical module and the passive optical network with the optical module |
| CN201110457829.0A Active CN102523540B (en) | 2011-12-31 | 2011-12-31 | Optical module and passive optical network with same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510170966.4A Active CN104796800B (en) | 2011-12-31 | 2011-12-31 | Optical module and the passive optical network with the optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104796800B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752054A (en) * | 2012-07-12 | 2012-10-24 | 青岛海信宽带多媒体技术有限公司 | Optical module of optical network unit |
| CN105162524B (en) * | 2012-07-12 | 2018-05-08 | 青岛海信宽带多媒体技术有限公司 | Passive optical network and its optical module for optical network unit |
| CN102932066B (en) * | 2012-10-17 | 2015-08-05 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
| CN106535010A (en) * | 2015-09-15 | 2017-03-22 | 青岛海信宽带多媒体技术有限公司 | Optical network unit of passive optical network, and optical module thereof |
| CN108333691A (en) * | 2017-01-20 | 2018-07-27 | 山东华云光电技术有限公司 | A kind of Wavelength tunable single-fiber bidirectional optical transceiver module |
| CN107168401B (en) * | 2017-06-30 | 2018-02-27 | 华中科技大学 | One kind time division multiplexing closed loop feedback heat control method and system |
| CN108391185B (en) * | 2018-02-12 | 2021-06-04 | 青岛海信宽带多媒体技术有限公司 | Optical module control method and device and optical module |
| CN111930162A (en) * | 2020-08-01 | 2020-11-13 | 武汉金信诺光电子有限公司 | Wavelength control circuit of optical module |
| CN114938243B (en) * | 2022-07-22 | 2023-04-25 | 深圳市亿联无限科技有限公司 | BOSA debugging method, system, debugger and debugging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201413415Y (en) * | 2009-05-19 | 2010-02-24 | 深圳市易飞扬通信技术有限公司 | DWDM SFD with controllable wavelength |
| CN101986577A (en) * | 2010-09-15 | 2011-03-16 | 江苏烨鑫电子有限公司 | Optical fiber transmitter |
| CN102098106A (en) * | 2011-02-22 | 2011-06-15 | 深圳市易飞扬通信技术有限公司 | Optical line terminal for wavelength division multiplexing-time division multiplexing passive optical network |
| CN202395935U (en) * | 2011-12-31 | 2012-08-22 | 青岛海信宽带多媒体技术有限公司 | Optical module and passive optical network with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3788232B2 (en) * | 2000-12-13 | 2006-06-21 | 日本電気株式会社 | Tunable optical transmitter, its output control method, and optical communication system |
-
2011
- 2011-12-31 CN CN201510170966.4A patent/CN104796800B/en active Active
- 2011-12-31 CN CN201110457829.0A patent/CN102523540B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201413415Y (en) * | 2009-05-19 | 2010-02-24 | 深圳市易飞扬通信技术有限公司 | DWDM SFD with controllable wavelength |
| CN101986577A (en) * | 2010-09-15 | 2011-03-16 | 江苏烨鑫电子有限公司 | Optical fiber transmitter |
| CN102098106A (en) * | 2011-02-22 | 2011-06-15 | 深圳市易飞扬通信技术有限公司 | Optical line terminal for wavelength division multiplexing-time division multiplexing passive optical network |
| CN202395935U (en) * | 2011-12-31 | 2012-08-22 | 青岛海信宽带多媒体技术有限公司 | Optical module and passive optical network with same |
Non-Patent Citations (1)
| Title |
|---|
| 一种半导体激光器的精密温度控制电路;龙燕等;《信息与电子工程》;20070430;第1-3页、图1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104796800A (en) | 2015-07-22 |
| CN102523540A (en) | 2012-06-27 |
| CN104796800B (en) | 2018-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102523540B (en) | Optical module and passive optical network with same | |
| CN101729949B (en) | WDM PON device with dynamically allocable wavelengths | |
| CN105144508B (en) | Temperature control multi-channel optical emission secondary module and optical transceiver module with this temperature control multi-channel optical emission secondary module | |
| KR100910940B1 (en) | Wavelength Tunable Passive Optical Network and the Tunable Method Thereof | |
| CN102752055B (en) | EPON and optical module for optical network unit thereof | |
| EP2056495A1 (en) | Electrical point-to-multipoint repeater for PON | |
| CN102511138B (en) | Dimmable transceiver, passive optical network system and device | |
| CN101471731A (en) | Network system, optical line terminating apparatus, and optical network apparatus | |
| JP2003298532A (en) | Wavelength division multiplexing passive optical network system | |
| CN103354625B (en) | The passive light network transmission system of the stacking wavelength-division and time-division multiplexing based on OFDM | |
| CN106330328A (en) | Optical module and optical signal output control method | |
| CN111355554A (en) | Route multiplexer, route multiplexing method, wavelength division routing method and network system | |
| CN103313150B (en) | Hybrid wavelength-division and time-division multiplexing passive light network transmission system based on directly modulated lasers | |
| CN103891066A (en) | Self-characterization tunable optical network unit | |
| CN101350670A (en) | Apparatus and method for amplifying optical signal of passive optical network as well as optical line terminal | |
| CN103703701B (en) | Dimmable receiver, optical transmitter and adjustable optical transceiver | |
| CN202395935U (en) | Optical module and passive optical network with same | |
| CN203522750U (en) | Optical network unit optical module | |
| CN102752676B (en) | EPON and optical module for optical network unit thereof | |
| CN103475955A (en) | Hybrid TWDM-PON system of downlink DPSK modulation and uplink direct modulation | |
| CN102098106A (en) | Optical line terminal for wavelength division multiplexing-time division multiplexing passive optical network | |
| CN202738051U (en) | Passive optical network and optical network unit optical module thereof | |
| CN102780529B (en) | EPON and optical line terminal optical module thereof | |
| CN205265865U (en) | Optical network unit based on automatically controlled multi -wavelength is selected | |
| CN103684615A (en) | Receiving-wave-adjustable optical module for fibers to home |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |