SU1380582A1 - Device for transmitting and receipting information over optic channal - Google Patents

Abstract

This invention relates to electronics. The purpose of the invention is to increase the noise immunity of the device when it receives the information received over the optical channel. To achieve the objective of the invention, the device contains, on the editorial side, a radiation source, a splitter, a polarizer, two information channels, a mixer, a control photodetector, a rms of synchronization signals, an information driver, and a four-way shift. and on the receiving side there are an analyzer, photodetector cores, two delays, a decisive block, two switches, a block for selecting a synchronization signal and two blocks for extracting information signals. Given il. Completion of the transmitting and receiving sides, as well as the digital part of the decision block, 8 Il. with s

Description

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liioPfipTeHne sends to e.pektr - trub.icke and can be used for relaping CHCTRM communication over optical cable

. IIjoRpt rri HHn - ncBhiiuoHne iid- mechostoychipost device with perPD; GIe II PROMGGIU FORMYCTION.

Pa, 1 11РИ1-оцспа structures of the electrical excreta of the transmitting part of the proposed device; on (1 IGo 2 ts. of the receiving part; on fi, 3, 4,), in - irg mopie diagrams of the charger set; on jluir. 7 - structure of uH l poiioii part of the decision block pas FIGS; 8 - diagram of the process GPGILL,

I c i r; iiu.: I to c d; - P i li predpl.,.; g part (cm, 1) 1- .:to | PNK 1, - chepip, paternogoditel 2, on. Synthetic - ony separator 3, lia ppformptstsi-oppmkh kapala, and the peri-mi ppforma uiionnbiii kapal includes nepBbii i and ol RIZaCPPP. MODULATOR l, RTOpOli Polarziopny11 modulator 5, optical 6 delay, third pole modulator 7, and the second; p1format1C1op) dripped - two reflectors, .7lt, and their mirrors 8 and 9, 1 gyratrony; 1 .1: tpiu 10 , nepBiiii polarization modulator 11, optical line 12 zadprlski, BTOpoii polarization modulator 13, third polarization modulator 14, mixer 15, control HLu i photorepere1П1к 16, hepater 17 spgpalov sync, ui, formiroa- 1 spruce 18 i Lormaciopo signal and the element is a 19-22. R of the receiving part (cm, 4 1G. 2) The DEVICE contains .chpalyzer 23, photo-detectors 2 i, 25, delay elements 26, 27, resolving unit 28, comfyraTopbi 29, 30, block 31 allocating the synchronization signal, blocks 32 , 33 allocations of information sigpaps,:) shift shemeptics, adders 39-41 modulo two, inver1cp 42, block 43 matches. The solving block contains 3jjeMeHT, i OR 44-47, P, 5-flip-flop, 8, 49.

YcTpoiiCTBo works as follows

4 An optimizer 18 information signal of the kmpolpet operation of distributing the information sequence to the bottom of the source: an imprint (MP) and an information-impulse (PN O, Let the information flow, subdiv

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Nid 101 NOIUO ,,. (, b. fig, 3), and on the BAT channel - 1 10101 1001 .., (m F IG. 1, e),

1 | ffm; C 1on 11th op iap, subject to claim reduction by channeling with NIM for the second time (xnjia form.provatol) 1B of the primary means- 1 od1MS. on the shchmch, polysonization |; and 11 modulator 11 of the second channel in the pump without returning to zero with PM1 and 1Tppe, equal to the half-wave voltage of the modulator. During the transmission of symbol 1, the first polarization modulator 11 introduces a phase difference between the components of the light with the mutually orthogonal polarization F, F, When transmitting the SIM signal 11; Raim bullet I I; 0 „Poskoly.u nrpBi.iii polyriza-,; i module of the mountains) 1 is located on the iiyni beam ntig pgo, he deist. 1y (optical impulses with numbers 2,4,6 ,,, (see, fig, 3b), introducing phase shift Φ, in accordance with the flow of information 1101011001. ,, Phase difference Φ JI, 5, ,,. corresponds to the rotation of the polarization plane of the optical radiation by 90, so that if the output of the gyrotropic plate 10 of the beam has a port, H), 1 | th polarization, then the output of the first polarization modulator 1 1 gz symbol 1 transmission time it acquires a horizontal polarization, the Oltic line 12 is set for the fully polar 30PaiUK, ii KotnioHOHTi.i light does not bring in a direct shift, for components with horizontal polarization are introduced by the delay determined by the construction of the line t. Thus, all pulses of optical radiation during which is transmitted by symbol 1, except for turning the polarization (Fig. 3, e), acquire a time delay, as shown in Fig. 3, g. The symbol O in the channel SH1M corresponds to the vertical polarization of the radiation to the initial temporal position of the pulse at the output of the optical delay line 12, the symbol 1 to the horizontal polarization and the delay by time r. Optical radiation pulses that pass through the optical delay line 1.2 pass through the second polarization modulator 13 and the third polarization modulator 14, where they are subjected to an additional knockout without changing the time position. On the electrical circuit B1 of the ori- ented polarization modulator 13, the sequence of the Mil channel (1011100100 ...) is fed with two characters relative to the initial T1 sequence, 1 (Fig. Ch, g). On thirds 14, the polarization modulator 14 of the same channel is fed the same sequence, but with a shift of four characters (that is, additional two characters with respect to the sequence supplied to the BTopoii polarization modulator. 13. Amplitude the control 1x voltage on the second 13 and third 14 polarization modulators is still equal to the half-wave voltage, since each of them, if there is 1, introduces a phase shift Ф IT and Ф О when the O symbol is transmitted.

The phase delay introduced by all modulators located along the path of the optical beam of the second channel is summed. As a result, for each pulse of optical radiation with the numbers 2,4,6,8 ... has Ф Фп / Phi, f,. ,, 25,25;, 31 (, ir, 1,2 ||. Since the delay by (T, 3, 5, .. o corresponds to the polarization flip side, the delay by 0.2,, during the previously accepted assumptions of the polarization of the beam, the temporal position of the pulses varies as follows: D, D, D, D, C, C, D, D, D, C, ... "(the index d indicates pulse delays).

The optical beam of the second channel, having passed the mixer, is output to the output of the transmitting part.

The states of optical radiation in the second channel can be compared with binary symbols in the following way. The presence of pulse delay 1 regardless of the polarization of the radiation indicates the presence of symbol 1 in the sequence transmitted over the GOTM channel, the absence of a delay indicates the presence of the symbol O. When comparing the polarization state to binary symbols, it is necessary to keep in mind that to provide a time delay modifies the polarization even before it is affected by modulators controlled by an MP channel signal. Therefore, if there is no delay, O is associated with vertical polarization, with symbol 1

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G (Ri: 1 "11 tplna (so klk and s.muchls at the entrance to the threshold is quietly sr. Rch. Pn oG () MPDULLTORP 13 IMP. LHS Ch. (T MS ptiklary polaryko O. With a delay of the symbol O, ss glotlpl rt- c: horizontal rhythm field, hmn-floor 1 - vertical (in the case of the input of the second P (1. 1), the impulse IMRST of horiz1nt.ch 11th lt).

So, for the primitive ni.mio set of pulse states of the optical student, (1%, 1, -, T, D, R, C, D, -, T, 1, Vl, o.) Of the BAT channel we have v.pedovatnost 1 10101 lOCi I. , (the same as transfix on the

FIGO 3, D, K, T „€„ with the ISCEDIENT OF THE AFTERNOUNCIENT I, subject to qualification according to the qualification of BAT), in the MI - Iogledatolayest 0010010111 ... Lastly, it does not coincide with the origin of the ad hoc distribution, the maturity of 10010010111 ... MP - it is rhch L11att of the simultaneous modulation of each pulse by two symbols of the rolled sequence with the relation Hgl. (1st delay D dpa of the symbol (see fng-, 3, and).

In the optical beam of the output channel of the polarity separator, the aypogical process is carried out, with respect to the odd pulses of optical radiation (see Fig. 4.6) with Totiltyrty, which posters the pulse and molar pulse of each pulse (1st pulse). at the same time, two characters with a delay with a delay of c: two characters, and a field rip (n {a - directly the information sequence to be transmitted. This process is shown in (finr. 4, where a, b, c, g d are shown impulses respectively the radiation source at the first and second outputs of the polarized ratlelitlsl, the signal to be transmitted over the MP channel and the niiM channel (similarly to Fig. 3, a; b, c, d, e).

The signal from the second input | 1) of the information signal 18 carrier 18, which is to be transmitted over the GOTM channel, through the shift element 21 per dpa of the symbol (see Fig. 1) is fed to the control input of the first polarizing modulator 4 of the first cable (see Fig. A, a) and through the shift element 22, on the symbol's head (see fmg, 1) is fed to the third floor

the modulator 7 of the first one dripped in the form of ssh npopoi bech porchpr, —itsonn to a bullet with an amplitude equal to a half-polymorphous mopulitorop (see fig. 4; As a result, the total phase delay for each modulator is a beam nlncodo optical line 6 delays (fig, 1) is acquired by the following control of the state of iol riazin for odd: xpuls.op optical radiation: V, B, D, D, G, P, I, V, D, D, D, D , ... (see FIGURE 4-0. The optical delay line 6 (see flash-1) delays the optical pulse having a horizontal polarization, thus, The output of line 6 zadsrzh si has B, C, D, 1., G,., 15, P, 1,, G, .., ... (hm „Fig. A and). These same emuls, HG noJMiiMisaiuioHHbu i module 5 (see, fig. Oh, iodverzhatsya ;; 110 risizilo} 1 Yu nodul shn and successively, and adjacent transmission to the MP 1011100100.0 client. (see fig. d, d, 3, d). As a result, we have a set of polarization states .f piier-fMiHoro and the scattering of Dtrrimecicoro radiation pulses with

1.3,5,7 ... g, 1;, в, в, в, в, в, г, г,

G,. o c This PABOR OF THE STATE, according to the rule, can be compared to the following rule, with the following sequence of binary simp.ol: for the PIM channel 001 1 SOOK .., for the rai channel - 10Ш00100, „with

The mixer 15 (see FIG. 1) implements the integration of optical rays into one stream, KOTopbui, having passed the propagation channel, arrives at the input of the receiving side (see FIG. 2).

At the entrance of the receiving CTopoHti, an analyzer 23 is installed, which performs the spatial separation of the optical beam depending on the polarization of the radiation on the two output beams: with horizontal polarization and with vertical polarization. Photodetectors 2, 25 are installed on the path of each of the output ps of the analyzer 23. In order to determine the temporal position of optical radiation pulses, the autocorrection method can be used, the output of each photodetector 2A, 25 includes a delay element 26, 27, the purpose of which is delay photo detector of photodetector 25, 2А

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time G, rapnoe tribal interpali noiHiuioinio-iiMnyni.cHoii modulation.

Tar: in their image, pc ini ii siu i block 28, when evaluating prejudice on 1P1 imjnii.co)), received from 2D, 25 photodetectors, uses 1n1 1, 2 photo photomultipieces, 25, but also infrared copies of H ; I interval position) () rationio-impuls: po1 | modulation, Od n (M; pf MenHo the signal of one of the photodetectors 24, 25 is used by the block 31 of the 1-slot synchronization signal during the formation of the control signals from the signals necessary for the operation of the device elements. The known cxcMi i FLPC are used to generate these signals With lia in Fig. 5, the short-term correlations between the signals are shown.

2Q on the receiving side: a - signal in the (.plastic channel on the analyzer 23; input from the mixer 15 on the transmitting side) This signal is the result of combining

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5 of the signals shown in FIG. Зк and fig „А, к о Signals at the outputs of the analyzer 23 with mutually orthogonal polarization; the clouds are shown in fig. 5, b, c. One of the signals is detected by the photo detectors 24, the other by the photodialer 25, which means that the state of polarization of each impulse is optical. It’s radiated.

In the next step, decision block 28 determines the temporal position of the pulses. For this purpose, the signal of each photodetector 24, 25 is used and its copy is shifted (see Fig. 6a, b). These two signals are fed to the opposite inputs of a difference amplifier. As a result, the signal shown in FIG. 6, c. Next, a convolution operation of the signal thus obtained with a syn: onsignal signal (see Fig. 6, d) is performed, for which the well-known signal multipliers are used. As a result, depending on the timing of the position of the signal of the photoreceiver 24, 25, a pulse of positive or negative polarity is formed (see Fig. 6, e). Signals corresponding to: - injecting to optical radiation pulses with vertical polarization without delay, with vertical polarization with delay, with horizontal polarization without delay and with horizontal polarization with delay

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ra. go inside the splash block 28 into four streams. If CHMFIOJIOM 1. designate the presence of the specified feature (backloom, emergency status, vertical, horizontal, horizontal separation), a set of signals resulting from the separation, is filled with a matrix.

In each column of the matrix of states, symbol 1 is present only in one line, thus it is easy to transform it by elementary logical operations followed by accepting characters that were previously accepted by the compiler.

The first sequence reflects the state of the time polarity of pulses, the second - the state of polarization.

The transformation of the state matrix into the indicated sequences can be carried out using the circuit shown in FIG. 7, at which the signal inputs correspond to the state matrix spreads, the RS trigger triggers 48, 49, respectively, reflect the state of the PIM's temporary position and the state of / hr (MI).

PN-1-sequence Feline arrives at the first input of the decision block 28, MP-sequence - at BTopoi i output of the decision block 28 (see Fig. 2) Each of the sequences obtained by such paiOMOM is divided into two streams corresponding to even and odd pulses optical radiation. This function is a full-time program; -tators 29, 30 (see Fig. 2). The separation is as follows. 11IM-sequence symbols transmitted by even optical pulses are sent to the first upstream switch 29, PIM symbols transmitted by odd pulses are sent to the second output of the switch 29, MP characters transmitted by odd pulses are sent to the first output of the switch 29, and even signals to the second output of the switch 30 by pulses.

As can be seen, at the first output of the switch 29, the initial sequencing to be transmitted over the PIM channel is highlighted, at the first exit of the commutator 30 — the initial sequence to be transmitted over the PM channel.

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Lp review rlPot g. Fi-Ulfneiuin information signal. I1Ch (Y - dmmo to consider de i: tg1Imu ng tcpch.ch- K; nHFni (iii interference, duraktyng gm. Kpt.; 1-; m) 1 (Prgpchp e intertpl g 1gl (1M11ip pulse optical-hcf about ippuchoim.

Multiplicative interference pyglzh. and 1-cn p poprnaya interrupting klplla Q (see. Fig. B, a) ptsprpp r-shchsnip ppt-1 (radiation 1: and on ipptor (e pro rm T, as a result of which impulse g | | opgich of radiation from a non-morpmy 6.7, B (see Fig. f (, 6) is not at all distributed to the input of the receiving CT (po) device. Ip output of the photoelectric detectors 24, 7.5 we have corresponding signals and signals (see Fig 8, c, T). 1 nform; 1 pip1P1Gche simnols D) 0stanav: iva1otc 1 n peiiiaronieM P.ioKe 28 g, rpt1zpolno, n xyniufM case every sympopic to k in the PIM channel, -ac and n channel MP footstappleplets, like a protin proctin in the PIM channel, -ac and p of the MP foot-thints, as a protin proctin in the MP channel, and as a protin proctin in the PIM channel, -ac and p and MP channel footpinlets, as prointin Thus, the game decides 2Y pyde- 5 l esp after Dovatsl1) Nost (see Fig. 7)

Detection symbols are detected. Afterwards, the device will go from the initial sequence to the original device (- Tju, which is to be transmitted via the IAP, Pors;; ACP and the reception of MP-based software is not equivalent to the similarity.

Formula and 3 o Ci rete n and

The device for perglci and reception of its business is on the oythical fy cannula, which is transmitted by CTopi Hc. sequentially optically connected radiation source, splitter and polarization separator, consisting of en1n.I with input of two information channels, two reflecting mirrors in the second information channel, each of the information channels consists of consecutively optically connected first polarization modulator the optical line, the delay and the second polarization modulator, as well as the mixer, the first and second inputs of which are connected to the outputs of the corresponding information channels, as well as the control The Hbui photodetector, optically connected to the second output of the cp todelecte, is the information signal shaper, the first polarization and the output of which is connected to the spectral input of the second field signal.

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T: CAP (.GO rot-LIEEI with H1.1 COITROL 1 INPUT) h photo session. .ation signal, on the receiver side - an analyzer, which outputs)). connected to the inputs of two phytoplle. - peaks, -1.current, 1 of which are connected to the phoampamp of the transmission unit, irenno and through the delay lines, i-ak i and rp1 h1 ay1; 1RL on the half-s-i block; m; to the cmhod of the block / l.shtelenin signal of the signal base, whose position is P1) / gk: pochei to the pictor of photoprism, characterized in that, 410, in order to increase the number-of-resistance (touch, on the transmitting element CTopfMif g, 15th element of the shift element, i from nforg hell) the channels are trusts.and gyu.lpreeanionip nodultorm, and according to I) TiipoM informational channel is a gyrotropic plate, with -JTOM n perpom informational channel, the flow TpeTbiiPo pol 5 p:; a nio: ppgo G ululortora nl fct with the passage of the vicious information channel, and its piccode in conjunction with the passage of the first semi-modulator modulator, the second half of the semi-modulation modulator plast of the second information mod- um Iajia , the input of the second information channel is the RESPONSE of the first reflective mirror, the output of which is connected through the gyrotrode plate

with the passage of the PSRG; OGO Polar1TZaN,) GO

modulator, and the output of the second part of the modulator of the modulator through a third of the polarization modulus; 1 Torr is connected to the input of LiTopoi o reflective. mirrors, whose -1 inlet is the output of the second information channel ;, and the first and second shift shifts are connected to the first and 1 K (1 signal f1 and 1 ppm signal from the information signal, and the outputs are connected to the electrical inputs of the second and third polariza modud toroi of the second information channel,) moves of the third and fourth elements of the shift

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c (1e, i.iuptiM Hii; (), u: .M forpformal..h infor.cnpnnogo signal, and outputs with -jifM.T iprkki.myi inputs of the first and third polarizponngkh modulators first information the channel, the clock inputs of the first and second shift elements are connected to the third output of the signal generator (synchronization, and T1) of the third and fourth elements with /; the wig - to the ry output of the synchronization signal generator; 1, on the njnieMHofl side, two information selection blocks are entered signal, two of which is the output, informational inputs of which are connected to the outputs of the resolver ka, and clocked phody - 1C respectively gstvuyu: it outputs a block You are a de, g1e) and synchronization signal kpzh- lH ii. of the blocks and the separation of the information signal contains a sequence-) 1o connected first, BTopoii and elements of shift, after the fourth and fourth and pttyG | mismatch shift, parv) modeler: but two, whose inputs connect HeHL.i respectively to the input and output of the second element of the shift, and the output to the modulus of the bottom of the THIRD adder modulo the bottom, the output of which is connected to the input of the fourth element of the shift, and through the inverter - with the first input of the coincidence unit, the second and tertz11 inputs of which are connected, respectively with the outputs of the first and fifth elements of the shift, and the output with one of the inputs of the third modulo two, the input of which is connected to the output 7th element of the shift element, and in The output is the information block of the information signal extraction block, the input of the first shift element and the second input of the second adder are the first and second information inputs of the information signal selection block 1, the clock elements of the shift elements are combined li are the input of the synchronization block of the howl. There is an information signal, the information inputs of the first and second blocks of the information signal are connected to the corresponding KOhfMyTaTopon bins, and the inputs are synchronized connected to the output of the block selection of the synchronization signal, and the outputs of the first and second

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The blocks shown in the informa- tion ICIPINP-IMPU.CHGT.T and the P-PIIT-signal are SUBSTRIMNO-III.IM.PYHSDMNMN SUSPIG TR; 1.

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Claims (1)

Claim A device for transmitting and receiving information on an optical channel, containing on the transmitting side · a serially optically connected radiation source, a beam splitter and a polarizing separator connected to the input of two information channels, two reflective mirrors in the second information channel, each of the information channels consists of serially optically connected the first polarization modulator, the optical delay line and the second polarization modulator, as well as the mixer, the first and second input of which are connected to the outputs of the corresponding information channels, as well as a control photodetector optically connected to the second output of the beam splitter, an information signal generator, the first polarizing output of which is connected to the electrical input of the second polarizing ohm positionally imnu aggp. 1st exit f <-r mn roi.a goal; ι n-form а η ι <<πι н.> about it is assigned to the electric wave in! · 4ο; about the polarization modulator of the second information channel, the synchronization signal generator, the input of which is connected to the output of Hit'o's photodetector, and the outputs - сιχ 'notetvenio with the control input of the polarization separator and the clock input of the driver of the information signal, on the receiving side - the analyzer, the outputs of which are connected to. inputs of two photodetectors. nicks, whose codes are directly connected to the inputs of the decision block. and through the delay lines, the τακιΜ input of the poking unit is connected to the output of the block / allotment of the sync signal R1TSN11, the input of which is connected to the output of the second photoelectric device, characterized in that, in order to increase the noise immunity, four shift elements are combined on the transmitting side, in the third and the third channels of polarization information channels; modulators, and in the toron the information channel is a gyrotropic plate, while in the first information channel the input of the third p o / i · r i .; but not about! π! a g og · odula ture is the input of the first information channel, and its output is connected to the input of the first polarization modulator, the output of the second polarization modulator is the output of the first information channel, the input of the second information channel is the input of the first reflective mirror, the output which through gprotrolnoy plate connected to. the input of the first polarization modulator, and the output of the second polarization modulator through the third polarization modulator is connected to the input of the second reflective. mirrors, the output of which is the output of the second information channel, the inputs of the first and second shear elements connected to the first output of the information signal shaper, and the outputs connected to the electrical inputs of the second and third polarization modulators of the second information channel, respectively, the inputs of the third and fourth shift elements 4 2 10 are connected to the iuptci βηχο, ιομ of the information signal shaper, and the outputs are to -jiei.Ti inputs of the first and third polarization modulators of the first information channel, the clock inputs of the first and Βτοροιо Shift Elements are connected to the third output of the synchronization signal generator, and the third and fourth shift elements - to the fourth output of the synchronization signal generator; on the receiving side, two information signal extraction blocks are introduced, two switches, the information inputs of which are connected to the outputs of the deciding flea, and the clock inputs to the corresponding outputs of the synchronization signal isolation block, each of the information signal extraction blocks contains the first, second, and third shift elements connected in series, the fourth and fifth shift elements connected in series, the first adder modulo two, whose inputs coe? jnns-ιη, ι respectively with the input and output of the second element shear-coagulant, and an output - with. the first input of the second adder is modulo two, the output of which is connected to the input of the fourth shift element, and through the inverter to the first input of the coincidence unit, the second and third inputs of which are connected respectively to the outputs of the fourth and fifth shift elements, and the output to one of the inputs of the third modulo adder. two, the other input of which is connected to the output of the third shift element, and the output is the information output of the information signal extraction block, while the input of the first shift element and the second input of the second adder are respectively the first and second information inputs of the information signal extraction unit, the clock inputs of the shift elements are combined, n are the synchronization input of the information signal extraction unit, the information inputs of the first and second information signal extraction units are connected to the corresponding outputs of the switches, and the synchronization inputs are connected to the outputs of the allocation unit synchronization signal, and the outputs of the first and second I 380582 blocks of separation of the information signal are, respectively, according to 'ICNONNP-IMPULSE СН1Л <II || Г>,' 1Ч | Ч! (.1 II 11 (111 rikhotami device. / 1180582 ΊΟ 77 12 73 74 75 15 77 18 79 20 Fig. 3 118 () 58 2 10 11 12 '13 74 IS 16 Π 18 19? 0 FIG. 5 -h1380582