CN203324504U

CN203324504U - Thermotropic AWG

Info

Publication number: CN203324504U
Application number: CN201320356412XU
Authority: CN
Inventors: 罗敬林; 胡海军; 刘胜宇; 张汛
Original assignee: Shenzhen Neo Photonic Technology Co Ltd
Current assignee: Shenzhen Neo Photonic Technology Co Ltd
Priority date: 2013-06-21
Filing date: 2013-06-21
Publication date: 2013-12-04
Anticipated expiration: 2023-06-21

Abstract

The utility model provides a thermotropic AWG. The thermotropic AWG comprises: a AWG chip, wherein the chip is provided with a first multichannel transmission array and a second multichannel transmission array separately; a first PD array and a second PD array which are located at two sides of the AWG chip respectively, wherein each PD is used to monitor the magnitude of optical signals of each channel of the first multichannel transmission array on a one-to-one basis; and a first FPC flexible printed circuit board and a second FPC flexible printed circuit board, wherein one end of the first FPC flexible printed circuit board and one end of the second FPC flexible printed circuit board are connected with the first PD array and the second PD array respectively, and the other ends of the first FPC flexible printed circuit board and the second FPC flexible printed circuit board are connected with a first socket array and a second socket array for outputting the monitored photoelectric signals of the first multichannel transmission array to the outside. The thermotropic AWG further comprises a 0 Ohm wire for connecting the first socket array and the second socket array. The first multichannel transmission array and the second multichannel transmission array are provided with channels whose number is two more than the actual optical path, so that when wavelength shift occurs due to temperature change, output or input channels can be in translation at the same time, whether as a 40 channel or as a 48 channel, each AWG can be provided with two redundant channels for temperature difference shift so as to improve the yield of the AWG chip.

Description

A kind of pyrogenicity type AWG

Technical field

The utility model relates to array waveguide grating AWG(Arrayed Waveguide Grating in a kind of DWDM dense wavelength division multiplexing system, hereinafter to be referred as AWG), relate in particular to a kind of pyrogenicity type AWG.

Background technology

Adopt the integrated AWG chip of silica-based waveguides in the commercialization of optical communication field success, AWG is mainly used in MUX and DE-MUX in DWDM dense wavelength division multiplexing system, multiplexer MUX can merge into the single channel light path by hyperchannel (wavelength), light path after merging to client, by DE-MUX by a-road-through road light path reverts to Manifold Light Way after arrival through the long Distance Transmission of single fiber again.At present commonly used have 40 or 48 passage MUX and DE-MUX, two kinds of 40 or 48 passage AWG chips that device adopts, as shown in Figure 1, comprise a single channel and multichannel array, when single channel as input channel, 40 or 48 passages during as output channel, just form the demodulation multiplexer DE-MUX of 40 or 48 passages; On the contrary, if when single channel as output channel, 40 or 48 passages during as input channel, just form the multiplexer MUX of 40 or 48 passages.The AWG chip that these two kinds of products adopt has common characteristics, and in multichannel array, the wavelength of each passage can vary with temperature and produce drift, 1 ℃ of the every variation of temperature, each channel wavelength 11pm that will drift about.In order to monitor the luminous power of each passage of AWG chip, will enclose a photoelectric detector PD (TAP-PD) on each passage, separate the luminous power of fraction from each passage, monitored the optical power intensity of each passage by the electric signal of PD output.Due to the fluctuation of AWG chip production process control parameters, the Temperature Distribution scope is larger, and the product work temperature range is narrower, causes the yield rate of AWG chip low.And that the cost of AWG chip occupies proportion is very large, cause MUX and DE-MUX cost always high.

The utility model content

For overcoming above shortcoming, the utility model provides the pyrogenicity type AWG that a kind of yield rate is high.

For reaching above goal of the invention, the utility model provides a kind of pyrogenicity type AWG, comprising: an AWG chip, and this chip is respectively equipped with first, second channel transmission array; Be positioned at described AWG chip both sides first, second PD array also respectively is set, each PD monitors each passage light signal size of described the first channel transmission array one to one; First, second FPC flexible PCB, the one end connects respectively described first, second PD array, and the other end connects respectively outwards output the first channel transmission array supervision photosignal of first, second receptacle array; Also comprise one 0 ohm of wires, connect first, second receptacle array.

Described the first channel transmission array and the second channel transmission array are respectively 42 channel transfer 40 road light signals and 3 channel transfer 1 road light signals, each is formed first, second PD array and is monitored that 42 road light signals, described first, second receptacle array comprise respectively outwards output 40 road photosignals of 20 sockets by 21 PD arrays.

Described the first channel transmission array and the second channel transmission array are respectively 50 channel transfer 48 road light signals and 3 channel transfer 1 road light signals, each is formed first, second PD array and is monitored that 50 road light signals, described first, second receptacle array comprise respectively outwards output 48 road photosignals of 24 sockets by 25 PD arrays.

Because being provided with than actual light path, first, second channel transmission array of said structure has more 2 passages, thus, when temperature changes while causing that wavelength produces drift, can take translation output simultaneously or input channel, no matter be as 40 or 48 passages, each AWG all can have 2 unnecessary passages to select for temperature difference drift, make the yield rate of AWG chip be improved, reduce temperature fluctuation generation wavelength variations and cause the situation of AWG chip rejection, thereby reduced the manufacturing cost of MUX or DE-MUX.

The accompanying drawing explanation

Fig. 1 means the AWG chip schematic diagram of prior art;

Fig. 2 A means the utility model 40Huo 48 road light signal pyrogenicity type AWG the first embodiment schematic diagram;

40 passage PD electric signal output connection diagrams shown in Fig. 2 B presentation graphs 2A;

48 passage PD electric signal output connection diagrams shown in Fig. 2 C presentation graphs 2A;

Fig. 3 A means the utility model 40Huo 48 road light signal pyrogenicity type AWG the second embodiment schematic diagram;

40 passage PD electric signal output connection diagrams shown in Fig. 3 B presentation graphs 3A;

48 passage PD electric signal output connection diagrams shown in Fig. 3 C presentation graphs 3A;

Fig. 4 A means the utility model 40Huo 48 road light signal pyrogenicity type AWG the 3rd embodiment schematic diagram;

40 passage PD electric signal output connection diagrams shown in Fig. 4 B presentation graphs 2;

48 passage PD electric signal output connection diagrams shown in Fig. 4 C presentation graphs 2.

Embodiment

Describe the utility model most preferred embodiment in detail below in conjunction with accompanying drawing.

The first embodiment: 40Huo 48 road light signal pyrogenicity type AWG as shown in Figure 2 A, comprise an AWG chip 100, this chip is respectively equipped with one first channel transmission array 110 and the second channel transmission array 120, described the first channel transmission array 110 comprises the 1st to the 42nd passage, have 40 passages in this 42 passage for transmitting 40 road light signals, described the second channel transmission array 120 is the 1st to the 3rd passage, has 1 channel transfer, 1 road light signal in this 3 passage.First, second channel transmission array 110,120 both light paths are reversible, when the first channel transmission array 110 as input channel, the second channel transmission array 120 is just as output channel, wherein 40 passages of the first channel transmission array 110 are exported 1 road light signal by wherein 1 passage of the second channel transmission array 120 by 40 road light signal inputs after multiplexing, form 40 road light signal MUX multiplexers; When the optical path direction of first, second channel transmission array 110,120 exchanges, form 40 road light signal demodulation multiplexer DE-MUX.

40 passage PD electric signal outputs as shown in Fig. 2 B, be positioned at described 40 light signal AWG chip 100 both sides, road first, second PD array 200,300 also respectively is set, the one PD array 200 comprises the 1st to the 21st PD, monitor the luminous power size of the 1st passage to the 21 passages of described the first channel transmission array 110, the 2nd PD array 300 comprises the 22nd to the 42nd PD, monitors the luminous power size of the 22nd passage to the 42 passages of described the first channel transmission array.First, second FPC flexible PCB 210,310, a two circuit boards wherein end connect respectively first, second PD array 200,300, being provided with first, second receptacle array 220,320 with mainboard is connected, according to the standard design of the pyrogenicity type AWG of 40 passages, each receptacle array comprises respectively 20 photosignal accessory power outlets.In the present embodiment, the 41st, 42 passages of the first channel transmission array 110 are without light signal, and the 2nd, 3 passages of the second channel transmission array 120 are without light signal simultaneously.Now, the 1st to the 21st PD of a PD array 200, totally 21 PD all have photosignal, and the 22nd to the 40th PD of the 2nd PD array 300, and totally 19 PD have photosignal, and the 41st, 42 PD of the 2nd PD array 300 are without photosignal.Totally 21 electric signal of the 1st to the 21st PD of the one PD array 200 is connected to the first receptacle array 220 on mainboard by a FPC flexible PCB 210, because this receptacle array only provides 20 electric signal accessory power outlets, so the 21st PD photosignal of a PD array 200 needs to be connected to by 0 ohm of wire 400 or other electric installation the 21st socket output of the second receptacle array 320; And the 22nd to the 40th PD totally 19 photosignals be connected to the second receptacle array 320 the 22nd to the 40th totally 19 the sockets outputs on mainboard by the 2nd FPC flexible PCB 310, complete thus the monitoring output of 40 road photosignals.

48 passage PD electric signal output ，Yu 40 road light signal AWG chip structures are similar as shown in Figure 2 C, and by the 1st to the 48th channel transfer light signal of the first channel transmission array 110 ', the 49th, 50 passages are without light signal; By the 1st channel transfer light signal of the second channel transmission array 120 ', the 2nd, the 3rd passage is without light signal simultaneously.Be positioned at 48 light signal AWG chip both sides, road and also respectively arrange first, the 2nd PD array 200 ', 300 ', the one PD array 200 ' comprises the 1st to the 25th PD, first, the 2nd PD array 200 ', 300 ' is respectively formed and is monitored 50 road light signals by 25 PD arrays, described first, the second receptacle array comprises respectively outwards output 48 road photosignals of 24 sockets, when the 1st channel transfer light signal by the second channel transmission array 120 ', now, the the 1st to the 25th PD as a PD array 200 ' that monitors the 1st to the 25th passage luminous power size, totally 25 PD all have photosignal, and the 26th to the 48th PD of the 2nd PD array 300 ', totally 23 PD have photosignal, and the 49th, 50 PD are without photosignal.Wherein, totally 25 electric signal of the 1st to the 25th PD is connected to the first receptacle array 220 ' output on mainboard by a FPC flexible PCB 210 ', because this receptacle array only provides 24 electric signal output channels, so the 25th electric signal needs the 25th socket that is connected to the second receptacle array 320 ' by 0 ohm of wire 400 or other electric installation to export; The 26th to the 48th PD totally 23 electric signal by the 2nd FPC flexible PCB 310 ', be connected to the second receptacle array 320 ' the 26th to the 48th totally 23 the sockets outputs on mainboard, complete thus the monitoring output of 48 road photosignals.

The second embodiment: 40Huo 48 road light signal pyrogenicity type AWG as shown in Figure 3A, identical with the chip of Fig. 2 A, just due to temperature variation, wave length shift, optical channel is translation thereupon, by the 2nd to the 41st channel transfer 40 road light signals of the first channel transmission array 110, the 1st, 42 passages transmit without light signal.The 2nd channel transfer 1 road light signal of the second channel transmission array 120, the 1st, 3 passages transmit without light signal.

40 passage PD electric signal outputs as shown in Figure 3 B, be about to the 2nd to the 21st PD as a PD array 200 that monitors the 2nd to the 21st passage luminous power size, totally 20 PD all have photosignal, and the 22nd to the 41st PD of the 2nd PD array 300, totally 20 PD have photosignal, thereby the 1st, the 42nd PD is without photosignal.Wherein, the the 2nd to the 21st totally 20 electric signal be connected to the first receptacle array 220 outputs on mainboard by a FPC flexible PCB 210, because this receptacle array just in time provides 20 sockets that are complementary with FPC flexible PCB 210 outputs, electric signal can directly be exported.The 22nd to the 41st totally 20 electric signal be connected to the second receptacle array 320 the 21st to the 40th totally 20 the sockets outputs on mainboard by the 2nd FPC flexible PCB 310, complete thus the monitoring output of 40 tunnel optical telecommunications.

48 passage PD electric signal outputs as shown in Figure 3 C, by the 2nd to the 49th channel transfer 48 road light signals of the first channel transmission array 110 ', the 1st, 50 passages are without light signal.The 2nd channel transfer 1 road light signal of the second channel transmission array 120 ', the 1st, 3 passages are without light signal.Be about to the 2nd to the 25th PD as a PD array 200 ' that monitors the 2nd to the 25th passage luminous power size, totally 24 PD all have photosignal, and the 26th to the 49th PD of the 2nd PD array 300 ', totally 24 PD have photosignal, thus the 1st, the 50th PD is without photosignal.Wherein, totally 24 electric signal of the 2nd to the 25th PD is connected to the first receptacle array 220 ' on mainboard by a FPC flexible PCB 210 ', because this receptacle array just in time provides 24 sockets that are complementary with FPC flexible PCB a 210 ' output, electric signal can directly be exported, and does not need other servicing unit; The 26th to the 49th PD totally 24 electric signal be connected to the second receptacle array 320 ' the 25th to the 48th totally 24 the sockets outputs on mainboard by the 2nd FPC flexible PCB 310 ', complete thus the monitoring output of 48 tunnel optical telecommunications.

The 3rd embodiment: 40Huo 48 road light signal pyrogenicity type AWG as shown in Figure 4 A, identical with the chip of Fig. 2 A, just due to temperature variation, wave length shift, optical channel is artificial translation thereupon, by the 3rd to the 42nd channel transfer 40 road light signals of the first channel transmission array 110, the 1st, 2 passages are without light signal.The 3rd channel transfer 1 road light signal of the second channel transmission array 120, the 1st, 2 passages are without light signal.

40 passage PD electric signal outputs as shown in Figure 4 B, be about to the 3rd to the 21st PD as a PD array 200 that monitors the 3rd to the 21st passage luminous power size, totally 19 PD all have photosignal, and the 22nd to the 42nd PD of the 2nd PD array 300, totally 21 PD have photosignal, and two of the 1st, the 2nd PD are without photosignal.Wherein, totally 19 electric signal of the 3rd to the 21st PD is connected to the first receptacle array 220 outputs on mainboard by a FPC flexible PCB 210, because this receptacle array provides 20 sockets, wherein there are 19 electric signal directly to export, be connected to the electrical signal of the 22nd PD of the 2nd PD array 300 by 0 ohm of wire and have more 1 accessory power outlet, and the 23rd to the 42nd PD totally 20 electric signal, be connected to the second receptacle array 320 the 21st to the 40th totally 20 the socket outputs on mainboard by the 2nd FPC flexible PCB 310, complete thus the monitoring output of 40 tunnel optical telecommunications.

48 passage PD electric signal outputs as shown in Figure 4 C, by the 3rd to the 50th channel transfer 48 road light signals of the first channel transmission array 110 ', the 1st, 2 passages are without light signal.The 3rd channel transfer 1 road light signal of the second channel transmission array 120 ', the 1st, 2 passages are without light signal.First, second PD array 200 ', 300 ' is respectively formed and is monitored 48 road light signals by 25 PD arrays, described first, second receptacle array comprises respectively outwards output 48 road photosignals of 24 sockets, the the 3rd to the 25th PD of the one PD array 200 ', totally 23 PD all have photosignal, and the 1st, 2 PD are without photosignal, and the 26th to the 50th PD of the 2nd PD array 300 ', totally 25 PD have photosignal.Wherein, totally 23 electric signal of the 3rd to the 25th PD is connected to the first receptacle array 220 ' output on mainboard by a FPC flexible PCB 210 ', because this receptacle array can provide 24, so the 26th PD electric signal of the 2nd PD array 300 ' needs to be connected to by 0 ohm of wire 400 or other electric installation the 24th socket output of the first receptacle array 220 '; Totally 25 electric signal of the 27th PD to the 50 PD of the 2nd PD array 300 ' are connected to the 25th to the 48th totally 24 socket outputs of the second receptacle array 320 ' on mainboard by the 2nd FPC flexible PCB 310 ', complete thus the monitoring output of 48 road photosignals.

First, second channel transmission array is provided with than actual light path and has more 2 passages, thus, when temperature changes while causing that wavelength produces drift, can take translation output simultaneously or input channel, no matter be as 40 or 48 passages, each AWG all can have 2 unnecessary passages to select for temperature difference drift, makes the yield rate of AWG chip be improved, reduce temperature fluctuation generation wavelength variations and cause the situation of AWG chip rejection, thereby reduced the manufacturing cost of MUX or DE-MUX.

Claims

1. a pyrogenicity type AWG, is characterized in that, comprising: an AWG chip, and this chip is respectively equipped with first, second channel transmission array; Be positioned at described AWG chip both sides first, second PD array also respectively is set, each PD monitors each passage light signal size of described the first channel transmission array one to one; First, second FPC flexible PCB, the one end connects respectively described first, second PD array, and the other end connects respectively outwards output the first channel transmission array supervision photosignal of first, second receptacle array; Also comprise one 0 ohm of wires, connect first, second receptacle array.

2. pyrogenicity type AWG according to claim 1, it is characterized in that, described the first channel transmission array and the second channel transmission array are respectively 42 channel transfer 40 road light signals and 3 channel transfer 1 road light signals, each is formed first, second PD array and is monitored that 42 road light signals, described first, second receptacle array comprise respectively outwards output 40 road photosignals of 20 sockets by 21 PD arrays.

3. pyrogenicity type AWG according to claim 1, it is characterized in that, described the first channel transmission array and the second channel transmission array are respectively 50 channel transfer 48 road light signals and 3 channel transfer 1 road light signals, each is formed first, second PD array and is monitored that 50 road light signals, described first, second receptacle array comprise respectively outwards output 48 road photosignals of 24 sockets by 25 PD arrays.