CN203761404U - Optical module employing Ethernet passive optical network - Google Patents
Optical module employing Ethernet passive optical network Download PDFInfo
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- CN203761404U CN203761404U CN201420009136.4U CN201420009136U CN203761404U CN 203761404 U CN203761404 U CN 203761404U CN 201420009136 U CN201420009136 U CN 201420009136U CN 203761404 U CN203761404 U CN 203761404U
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Abstract
The utility model discloses an optical module employing an Ethernet passive optical network, and relates to the field of optics. Incident light received by the optical module is incident light transmitted by the wavelength division multiplexing technology. The optical module comprises an optical network integration chip and an optical transmit-receive device. The optical transmit-receive device includes a light source detection part and a laser. The light source detection part and the optical network integration chip are connected. The light source detection part sends electric signals to the optical network integration chip. The optical network integration chip and the laser are connected. The optical network integration chip sends driving signals to the laser. The laser is used for emitting laser signals. The optical transmit-receive device is formed by integrating the light source detection part with the laser, such that the number of components of the optical module is reduced, the cost is greatly cut, the circuit space of the optical module is saved, interference among circuits is minimized, and the stability of the optical module is improved. Meanwhile, optical communication costs are substantially reduced and resources are saved.
Description
Technical field
The utility model relates to a kind of optical module, relates in particular to a kind of optical module with Ethernet gauge without light source network function.
Background technology
Domestic market and international market, the optical fiber communication direction that high broadband, two-forty and multiple business are merged has started application.In numerous solutions, the ultimate solution of broadband access is just thought in the appearance that Fiber to the home (Fiber To The Home is called for short FTTH).Domestic market has started large-area applications.
And in the numerous schemes of FTTH, passive optical-fiber network (Passive Optical Network is called for short PON) receives much concern.It has save fiber resource, to the transparent feature of procotol, playing the part of more and more important role at optical access network.And the combination of Ethernet and PON has produced Ethernet passive optical network (Ethernet Passive Optical Network is called for short EPON).After EPON produces, high with its stability, reliability is high, can realize up to features such as the remote accessings of 20km and being applied widely at optical communication field.Optical module is as core component wherein, and price pressure increases day by day.
Existing optical module generally includes receiving element and transmitter unit.Receiving element comprises reception optical assembly (Receiver optical subassembly is called for short ROSA) and amplitude limiting amplifier circuit; Transmitter unit comprises utilizing emitted light assembly (Transmitter optical subassembly is called for short TOSA) and laser drive circuit.In ROSA, generally include photodiode and Trans-impedance preamplifier.But most of optical modules are all with digital diagnosis function, generally that additional the chip of a transceiver singlechip microprocessor is realized to digital diagnosis function, also have and bring into use on a small quantity three-in-one chip can directly realize digital diagnosis function, but but there is no long hair light measuring ability, need to be by the auxiliary long hair light measuring ability of realizing of outside line.
Utility model content
The purpose of this utility model is, the optical module that adopts Ethernet gauge without light source network is provided, and solves above technical problem.
The technical problem that the utility model solves can realize by the following technical solutions:
The optical module of employing Ethernet gauge without light source network described in the utility model, the incident light that described optical module receives is the incident light that adopts wavelength-division multiplex technique transmission; Described optical module comprises: optical-fiber network integrated chip and light R-T unit, and described light R-T unit comprises: light source detector part and laser;
Described light source detector part is connected with described optical-fiber network integrated chip, and the signal of telecommunication is sent to described optical-fiber network integrated chip by described light source detector part;
Described optical-fiber network integrated chip is connected with described laser, and driving signal is sent to described laser by described optical-fiber network integrated chip, and described laser is in order to Emission Lasers signal.
In a preferred embodiment, described light source detector part comprises: laser detector and Trans-impedance preamplifier;
Described laser detector is used for gathering incident optical signal, and converts described light signal to the signal of telecommunication;
Described laser detector connects described Trans-impedance preamplifier, and the signal of telecommunication is sent to described Trans-impedance preamplifier by described laser detector;
Described Trans-impedance preamplifier connects described optical-fiber network integrated chip, and the signal of telecommunication is sent to described optical-fiber network integrated chip by described Trans-impedance preamplifier;
Described optical-fiber network integrated chip amplifies the described signal of telecommunication receiving, and the signal output port output from described optical-fiber network integrated chip by the signal of telecommunication after amplifying.
In a preferred embodiment, described optical-fiber network integrated chip comprises: limiting amplifier, drive circuit for laser, A/D converter and controller;
Described limiting amplifier, described drive circuit for laser, described A/D converter and described controller communicate by I2C bus, and concrete signal transmission is as follows:
Described Trans-impedance preamplifier connects described limiting amplifier, and the signal of telecommunication is sent to described limiting amplifier by described Trans-impedance preamplifier;
Described limiting amplifier amplifies the signal of telecommunication receiving, and the signal output port output from described optical-fiber network integrated chip by the signal of telecommunication after amplifying;
Described limiting amplifier connects described A/D converter, and the signal of telecommunication is sent to described A/D converter by described limiting amplifier;
Described drive circuit for laser connects described laser, and driving signal is sent to described laser by described drive circuit for laser;
Described drive circuit for laser connects described A/D converter, and the signal of telecommunication is sent to described A/D converter by described drive circuit for laser;
Described A/D converter connects described controller.
In a preferred embodiment, also comprise memory, the data terminal of described memory connects described controller.
In a preferred embodiment, described optical-fiber network integrated chip also comprises temperature sensor, and described temperature sensor connects described controller, and temperature signal is sent to described controller by described temperature sensor.
In a preferred embodiment, described A/D converter is ADC device.
In a preferred embodiment, described laser detector is photodiode.
In a preferred embodiment, described laser is semiconductor laser.
In a preferred embodiment, the wave-length coverage of described Emission Lasers signal is: 1480nm-1500nm.
In a preferred embodiment, described light R-T unit is bi-directional light assembly.
The beneficial effects of the utility model:
The utility model provides a kind of EPON terminal optical module, mainly comprises optical module master chip and optical transceiving device.Light R-T unit is integrated by light source detector part and laser.Thereby the quantity that has reduced the components and parts in optical module, greatly reduces cost, reach the circuit space of saving optical module, reduce the interference between circuit, improve the stability of this optical module.Also greatly reduce optical communication cost, economize on resources simultaneously.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of the optical module of employing Ethernet gauge without light source network described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
Embodiment one, illustrate present embodiment in conjunction with Fig. 1, present embodiment adopts the optical module of Ethernet gauge without light source network, and the incident light that optical module receives is the incident light that adopts wavelength-division multiplex technique transmission; Optical module comprises: optical-fiber network integrated chip 1 and light R-T unit 2, and light R-T unit 2 comprises: light source detector part 21 and laser 22;
Light source detector part 21 is connected with optical-fiber network integrated chip 1, and the signal of telecommunication is sent to optical-fiber network integrated chip 1 by light source detector part 21;
Optical-fiber network integrated chip 1 is connected with laser 22, and driving signal is sent to laser 22 by optical-fiber network integrated chip 1, and laser 22 is in order to Emission Lasers signal.
Embodiment two, illustrate present embodiment in conjunction with Fig. 1, present embodiment and embodiment one adopt the difference of the optical module of Ethernet gauge without light source network to be, light source detector part 21 comprises: laser detector 212 and Trans-impedance preamplifier 211;
Laser detector 212 is for gathering incident optical signal, and by light signal convert the signal of telecommunication to;
Laser detector 212 connects Trans-impedance preamplifier 211, and the signal of telecommunication is sent to Trans-impedance preamplifier 211 by laser detector 212;
Trans-impedance preamplifier 211 connecting optical network integrated chips 1, the signal of telecommunication is sent to optical-fiber network integrated chip 1 by Trans-impedance preamplifier 211;
Optical-fiber network integrated chip 1 amplifies the signal of telecommunication receiving, and the signal output port output from optical-fiber network integrated chip 1 by the signal of telecommunication after amplifying.
The optical module of employing Ethernet gauge without light source network of the present utility model (Ethernet Passive Optical Network is called for short EPON), the light R-T unit 2 in this optical module can be divided into receiving unit and radiating portion.Receiving unit and emission part all adopt a point light WDM technology, this technology is by the optical carrier of two or more different wave lengths, (also claim wave multiplexer at radiating portion through multiplexer, multiplexer) these optical carriers are merged together, and be coupled in optical link and transmit in same optical fiber; The light carrier of various wavelength is separated through channel-splitting filter (also claiming demodulation multiplexer or demultiplexer, demulti-plexer) at receiving unit, then by the corresponding restoring signal of further processing of optical receiver.This multiplex mode is called wavelength division multiplexing.Can be one-way transmission, can be also transmitted in both directions.
Receiving unit: the light signal of a constant bit rate becomes the signal of telecommunication after photo-detector in opto-electronic device (PIN), export again the signal of telecommunication of phase code rate through the Trans-impedance preamplifier 211 in opto-electronic device, deliver to the differential electric signal of the level of the rear output certain amplitude of optical-fiber network integrated chip 1;
Transmitting portion: the signal of telecommunication of a constant bit rate is launched the laser signal of respective rate, i.e. modulated light signal through optical-fiber network integrated chip 1 rear drive laser 22.
Embodiment three, illustrate present embodiment in conjunction with Fig. 1, present embodiment and embodiment one adopt the difference of the optical module of Ethernet gauge without light source network to be, optical-fiber network integrated chip 1 comprises: limiting amplifier 11, drive circuit for laser 12, A/D converter 13 and controller 14;
Limiting amplifier 11, drive circuit for laser 12, A/D converter 13 and controller 14 communicate by I2C bus, and concrete signal transmission is as follows:
Trans-impedance preamplifier 211 connects limiting amplifier 11, and the signal of telecommunication is sent to limiting amplifier 11 by Trans-impedance preamplifier 211;
Limiting amplifier 11 amplifies the signal of telecommunication receiving, and the signal output port output from optical-fiber network integrated chip 1 by the signal of telecommunication after amplifying;
Limiting amplifier 11 connects A/D converter 13, and the signal of telecommunication is sent to A/D converter 13 by limiting amplifier 11;
Drive circuit for laser 12 connecting lasers 22, driving signal is sent to laser 22 by drive circuit for laser 12;
Drive circuit for laser 12 connects A/D converter 13, and the signal of telecommunication is sent to A/D converter 13 by drive circuit for laser 12;
A/D converter 13 connects controller 14.
Controller 14 is communicated by letter with drive circuit for laser 12, limiting amplifier 11 and A/D converter 13 by I2C bus, in order to control drive circuit for laser 12 and limiting amplifier 11, and can realize digital diagnosis function and long hair light measuring ability.
Controller 14 can be monitored the operating state transmitting and receiving simultaneously, and optical module adopts controller 14 to process corresponding signal, real-time monitoring module operating voltage, and the information such as temperature, bias current, have digital diagnosis function (DDMI); In addition, controller 14 can also judge whether fluorescent lifetime exceeds the fluorescent lifetime of requirement, to realize rogue ONU(Optical Network Unit, optical network unit) measuring ability.
Opto-electronic device in optical module circuit of the present utility model adopt utilizing emitted light assembly (Transmitter optical subassembly, be called for short TOSA) and receive optical assembly (Receiver opticalsubassembly, abbreviation ROSA) device and be integrated on light R-T unit 2.Drive circuit for laser 12 and limiting amplifier 11 and controller 14 are integrated in chip piece, both can realize digital diagnosis function, can also realize long hair light measuring ability.Circuit level is high, the quantity of chip and components and parts reduces, and simple in structure, volume is little, greatly reduce cost, can realize high rate data transmission, meeting under the prerequisite of systems technology requirement, improve system reliability, simultaneously again with long hair light measuring ability, use the ONU scheme of the type optical module can directly omit the long hair optical detection circuit of peripheral circuit, make circuit simple, save cost.
Present embodiment middle controller 14 can be monitored the fluorescent lifetime of laser 22 and be realized long hair light and detect (being rogue ONU measuring ability), can carry out the setting threshold time by the value of internal register is set, and then the time of control long hair light, this time can be from ms level to s level, scope is larger, can meet the demand of different user.
Rogue ONU is the one image address in check long luminance ONU.The performance of rogue ONU is, the uncontrolled long hair light of its optical module, or cannot thoroughly close, also have the light leak of suitable power.According to China's relevant criterion requirement, should be not more than-45dB of emission maximum luminous power under the up closed condition of EPON20kmONU optical module, the up optical module of GPON is should be not more than-10dB of transmitting optical power when without input signal.The optical module not meeting this requirement has been light leak and has existed.
Embodiment four, present embodiment and embodiment three adopt the difference of the optical module of Ethernet gauge without light source network to be, also comprise memory 3, and the data terminal of memory 3 connects controller 14.
Embodiment five, present embodiment and embodiment three adopt the difference of the optical module of Ethernet gauge without light source network to be, optical-fiber network integrated chip 1 also comprises temperature sensor 15, temperature sensor 15 connects controller 14, and temperature signal is sent to controller 14 by temperature sensor 15.
Present embodiment can signal corresponding to fast processing by controller 14, makes the optical module parameter information such as supervision and reporting operating voltage, temperature, bias current, transmitting power and received power in real time.
Embodiment six, present embodiment and embodiment three adopt the difference of the optical module of Ethernet gauge without light source network to be, A/D converter 13 is ADC device.
Embodiment seven, present embodiment and embodiment two adopt the difference of the optical module of Ethernet gauge without light source network to be, laser detector 212 is photodiode.
Photodiode (add an I district that approaches intrinsic material between P, N knot, form the semiconductor photo diode of PIN structure) in the utility model.
Embodiment eight, present embodiment and embodiment one adopt the difference of the optical module of Ethernet gauge without light source network to be, laser 22 is semiconductor laser.
Embodiment nine, present embodiment and embodiment one adopt the difference of the optical module of Ethernet gauge without light source network to be, the wave-length coverage of Emission Lasers signal is: 1480nm-1500nm.For example, the wavelength of Emission Lasers signal can be: 1480nm, 1490nm, 1495nm or 1500nm etc.
Embodiment ten, present embodiment and embodiment one adopt the difference of the optical module of Ethernet gauge without light source network to be, light R-T unit 2 is bi-directional light assembly.
Bi-directional light assembly of the present utility model (Bidirectional Optical Subassembly is called for short BOSA), adopts an optical fiber to realize transmitting and receiving of light signal.After the photodiode in BOSA and Trans-impedance preamplifier 211, convert first signal of telecommunication to by wavelength-division multiplex technique (WDM) incident optical signal and be delivered to the limiting amplifier 11 in optical-fiber network integrated chip 1, limiting amplifier 11 is connected with A/D converter 13, and controller 14 can be controlled limiting amplifier 11 and amplifies and export first signal of telecommunication.First signal of telecommunication is as output difference level signal.
Drive circuit for laser 12 connects laser 22 and the A/D converter 13 in bi-directional light assembly, second signal of telecommunication of input inputs to drive circuit for laser 12, controller 14 is connected with A/D converter 13 by internal bus and controls drive circuit for laser 12 and provide bias current and modulated current according to second signal of telecommunication to bi-directional light assembly, makes laser 22 transmitting illuminants output utilizing emitted light signals.
The utility model comprises optical-fiber network integrated chip 1, light R-T unit 2 and holder.Wherein optical-fiber network integrated chip 1 is integrated limiting amplifier 11, drive circuit for laser 12, A/D converter 13 and controller 14, controller 14 can control limiting amplifier 11 and drive circuit for laser 12 is realized numerical diagnostic function and long hair light measuring ability, and this long hair light measuring ability is all unrealized in existing optical module inside, can only realize by peripheral auxiliary circuits.Light R-T unit 2 is integrated by TOSA device and ROSA device.
Circuit level of the present utility model is high, the quantity of chip and components and parts reduces, and simple in structure, volume is little, greatly reduce cost, can realize high rate data transmission, meet under the prerequisite of systems technology requirement, improve the reliability of this optical module, simultaneously again with long hair light measuring ability, use the utility model to reach the long hair optical detection circuit that omits peripheral circuit, make circuit simple, cost-effective object.
The foregoing is only the utility model preferred embodiment; not thereby limit execution mode of the present utility model and protection range; to those skilled in the art; the scheme that being equal to of should recognizing that all utilization the utility model specifications and diagramatic content done replaces and apparent variation obtains, all should be included in protection range of the present utility model.
Claims (10)
1. adopt the optical module of Ethernet gauge without light source network, the incident light that described optical module receives is the incident light that adopts wavelength-division multiplex technique transmission; It is characterized in that, described optical module comprises: optical-fiber network integrated chip and light R-T unit, and described light R-T unit comprises: light source detector part and laser;
Described light source detector part is connected with described optical-fiber network integrated chip, and the signal of telecommunication is sent to described optical-fiber network integrated chip by described light source detector part;
Described optical-fiber network integrated chip is connected with described laser, and driving signal is sent to described laser by described optical-fiber network integrated chip, and described laser is in order to Emission Lasers signal.
2. the optical module that adopts as claimed in claim 1 Ethernet gauge without light source network, is characterized in that, described light source detector part comprises: laser detector and Trans-impedance preamplifier;
Described laser detector is used for gathering incident optical signal, and converts described light signal to the signal of telecommunication;
Described laser detector connects described Trans-impedance preamplifier, and the signal of telecommunication is sent to described Trans-impedance preamplifier by described laser detector;
Described Trans-impedance preamplifier connects described optical-fiber network integrated chip, and the signal of telecommunication is sent to described optical-fiber network integrated chip by described Trans-impedance preamplifier;
Described optical-fiber network integrated chip amplifies the described signal of telecommunication receiving, and the signal output port output from described optical-fiber network integrated chip by the signal of telecommunication after amplifying.
3. the optical module that adopts as claimed in claim 1 Ethernet gauge without light source network, is characterized in that, described optical-fiber network integrated chip comprises: limiting amplifier, drive circuit for laser, A/D converter and controller;
Described limiting amplifier, described drive circuit for laser, described A/D converter and described controller all communicate by I2C bus, and concrete signal transmission is as follows:
Described Trans-impedance preamplifier connects described limiting amplifier, and the signal of telecommunication is sent to described limiting amplifier by described Trans-impedance preamplifier;
Described limiting amplifier amplifies the signal of telecommunication receiving, and the signal output port output from described optical-fiber network integrated chip by the signal of telecommunication after amplifying;
Described limiting amplifier connects described A/D converter, and the signal of telecommunication is sent to described A/D converter by described limiting amplifier;
Described drive circuit for laser connects described laser, and driving signal is sent to described laser by described drive circuit for laser;
Described drive circuit for laser connects described A/D converter, and the signal of telecommunication is sent to described A/D converter by described drive circuit for laser;
Described A/D converter connects described controller.
4. the optical module that adopts as claimed in claim 3 Ethernet gauge without light source network, is characterized in that, also comprises memory, and the data terminal of described memory connects described controller.
5. adopt as claimed in claim 3 the optical module of Ethernet gauge without light source network, it is characterized in that, described optical-fiber network integrated chip also comprises temperature sensor, and described temperature sensor connects described controller, and temperature signal is sent to described controller by described temperature sensor.
6. the optical module that adopts as claimed in claim 3 Ethernet gauge without light source network, is characterized in that, described A/D converter is ADC device.
7. the optical module that adopts as claimed in claim 2 Ethernet gauge without light source network, is characterized in that, described laser detector is photodiode.
8. the optical module that adopts as claimed in claim 1 Ethernet gauge without light source network, is characterized in that, described laser is semiconductor laser.
9. the optical module that adopts as claimed in claim 1 Ethernet gauge without light source network, is characterized in that, the wave-length coverage of described laser Emission Lasers signal is: 1480nm-1500nm.
10. the optical module that adopts as claimed in claim 1 Ethernet gauge without light source network, is characterized in that, described light R-T unit is bi-directional light assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009136.4U CN203761404U (en) | 2014-01-07 | 2014-01-07 | Optical module employing Ethernet passive optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009136.4U CN203761404U (en) | 2014-01-07 | 2014-01-07 | Optical module employing Ethernet passive optical network |
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| Publication Number | Publication Date |
|---|---|
| CN203761404U true CN203761404U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420009136.4U Expired - Fee Related CN203761404U (en) | 2014-01-07 | 2014-01-07 | Optical module employing Ethernet passive optical network |
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| CN (1) | CN203761404U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634611A (en) * | 2016-01-08 | 2016-06-01 | 华为技术有限公司 | Optical module and signal processing method |
| CN109617608A (en) * | 2018-12-25 | 2019-04-12 | 武汉恒泰通技术有限公司 | A kind of 5G optical module control system and control method |
-
2014
- 2014-01-07 CN CN201420009136.4U patent/CN203761404U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634611A (en) * | 2016-01-08 | 2016-06-01 | 华为技术有限公司 | Optical module and signal processing method |
| CN109981175A (en) * | 2016-01-08 | 2019-07-05 | 华为技术有限公司 | The method of optical module and signal processing |
| CN109981175B (en) * | 2016-01-08 | 2021-10-01 | 华为技术有限公司 | Optical module and signal processing method |
| CN109617608A (en) * | 2018-12-25 | 2019-04-12 | 武汉恒泰通技术有限公司 | A kind of 5G optical module control system and control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20190107 |