AU614595B2 - Receiving pre-amplifier for an optical telecommunication line - Google Patents

Receiving pre-amplifier for an optical telecommunication line Download PDF

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Publication number
AU614595B2
AU614595B2 AU32649/89A AU3264989A AU614595B2 AU 614595 B2 AU614595 B2 AU 614595B2 AU 32649/89 A AU32649/89 A AU 32649/89A AU 3264989 A AU3264989 A AU 3264989A AU 614595 B2 AU614595 B2 AU 614595B2
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AU
Australia
Prior art keywords
amplifier
diode
receiving pre
capacitor
coupled
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.)
Ceased
Application number
AU32649/89A
Other versions
AU3264989A (en
Inventor
Sungar Aytac
Michael Gwiazdowski
Hoang Do Van
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ADC GmbH
Original Assignee
Krone GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krone GmbH filed Critical Krone GmbH
Publication of AU3264989A publication Critical patent/AU3264989A/en
Application granted granted Critical
Publication of AU614595B2 publication Critical patent/AU614595B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver
    • H04B10/693—Arrangements for optimizing the preamplifier in the receiver
    • H04B10/6933—Offset control of the differential preamplifier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Amplifiers (AREA)

Abstract

The invention relates to a receiving preamplifier of an amplifier (1) which is preceded by an avalanche photodiode (APD) as receiving diode in the reverse direction and a capacitor (C1) and which has negative feedback via a resistor (RF). To create a receiving preamplifier which also properly functions with high received light powers and thus has a wide dynamic range, a PIN diode (PD) is connected in series in the forward direction with the avalanche photodiode (APD). <IMAGE>

Description

COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION NAME ADDRESS OF APPLICANT: Krone Aktiengesellschaft Beeskowdamm 3-11 D-1000 Berlin 37 Federal Republic of Germany NAME(S) OF INVENTOR(S): SUNGAR AYTAC MICHAEL GWIAZDOWSKI HOANG DO VAN ADDRESS FOR SERVICE: a o S* DAVIES COLLISON Patent Attorneys 1 Little Collins Street, Melbourne, 3000.
COMPLETE SPECIFICATION FOR THE INVENTION ENTITLED: Receiving pre-amplifier for an optical telecommunication line The following statement is a full description of this invention, including the best method of performing it known to me/us:t52tt$V-2'tVtr.-V"SVr".-.
-2- Generally, a receiving pre-amplifier is kn~own as an amplifier with voltage amplification -with a receiver diode and a capacitor on the load side, and which is connected by way of a high-ohmic feedback resistor. The receiver diode may consist either of PIN photodiode, or an avalanche photodiode that is in reverse bias by way of a fixed, high-ohmic oaf: resistor. To ensure that the receiving pre-amplifier delivers a constant a output voltage, independent of the receiver light guide, the receiving pre-amplifier muist be variable. Both resistors muist be high-ohmic so :0 0~.that the required sensitivity is achieved. Here, sensitivity refers to the minimum receiving light intensity reaching the receiver diode to ensure fault-free signal regeneration.
In optical telecoamunication networks there is the additional demand that the receiving pre-amplifier must operate also with high receiving light intensities -6 dBm).
To prevent amplifier overdrive in such an instance, i.e. to ensure that the signals are regenerated free of faults so that no distortions arise, 0 the feedback resistor must be low-ohmic. A disadvantage with these receiving pre-amplit'iers is that the sensitivity is significantly reduced due to the thermal noise of the low-ohmic feedback resistor.
As a result of this, such receiving pre-amplifiers have a very low dynamic response (typical: 20 dB). Here, dynamic response is the difference between minimum and maxim=m receiving light intensity.
Consequently, the intention of the invention is to create a receiving pre-amplifier of this particular type that will operate acceptably, even With high light intensities, thereby ensuring a high dynamic response.
L.li_-Llii i I -3- In accordance with the present invention there is provided a receiving pre-amplifier having: an amplifier with a feedback resistor coupled from an output thereof to an input thereof, and a reversely connected avalanche photodiode arranged as a receiver diode and coupled via a capacitor to said input, characterised in that a PIN diode is coupled in series and in forward direction to said receiver diode between said receiver diode and said capacitor.
Preferably, the PIN diode is effective, in use of the pre-amplifier, to reduce the gain of the pre-amplifier.
St In another aspect, there is provided a receiving pre-amplifier having: an amplifier with t t a feedback resistor coupled from an output thereof to an input thereof, and a reversely connected PIN photodiode arranged as a receiver diode and coupled via a capacitor to said input, characterised in that a PIN diode is coupled in series and in forward direction to said receiver diode between said receiver diode and said capacitor, and that an 20 equaliser and a peak detector are coupled in series to the output of the amplifier, said peak detector supplying a voltage U to control amplifiers which control the amplifier and the equaliser.
Other advantageous points of the invention are given in the sub-claims.
I 25 Attention is drawn to the explanations given in claim 3, according to which the iequaliser contains a PIN diode.
910620,vrsspe.08,krone,3 3A The invention is subsequently explained on the basis of two configuration examples of receiving pre-amplifiers. The following is shown: Fig. 1 The first configuration example of a receiving pre-amplifier with an avalanche photodiode as receiver diode; and Fig. 2 The second configuration example with a PIN photodiode as a receiver diode.
The receiving pre-amplifier, as shown as the first configuration example in Fig. 1, consists of a receiver diode APD, an amplifier 1, a feedback resistor RF connected parallel with the amplifier, a capacitor C1 series-connected with amplifier 1, and a PIN diode PD that is connected potential to earth. The receiver diode is composed of an avalanche photodiode APD.
0 o 4a 0 0 o 0 o440 44 4 0: 910620,vrssp.008,kron,4 4 The avalanche photodiode APD is series-connected in reverse direction with the capacitor C1 on the line side of the amplifier 1.
The PIN diode PD is series-connected in forward direction to the avalanche photodiode APD, between the avalanche photodiode APD and the capacitor C1.
The parallel-connected feedback resistor RF is connected to the input E and the gain A of the amplifier 1. As a result of the use of the avalanche photodiode APD (internal gain, avalanche amplification), a low-ohmic feedback resistor RF is employed.
The performance of the receiving pre-amplifier, in conformity with Fig. 1, is described at this point. At a small receiving light intensity PL the resistance of the PIN diode PD is high-ohmic vis-a-vis the relationship between the feedback resistor R F and the gain A of the amplifier 1 (input resistance). The PN diode PD is thus ineffective. The receiving light intensity PL' or the entire photo-diode signal alternating current, flows into the amplifier 1. At a high receiving light intensity PL the resistance of the PIN diode PD will be low-ohmic. Consequently, the largest proportion of the receiving light intensity PL' or the signal 0 alternating current, is lead off to earth. The gain A of the amplifier 1 is small here so that amplifier overdrive is prevented. Thus, the gain A of the amplifier 1 does not have to be controlled.
0-o:0° Fig.2 shows the second configuration example of the receiving pre-amplio fier with a PIN photodiode PPD as receiver diode, and with a control circuit for amplifier 1.
co The control circuit consists of an equalizer 2, a buffer 3, a peak detector 4, and two control amplifiers 5 and 6. A PIN photodiode PPD, and a capacitor C1, are connected in reverse direction on the line side 0 0 of the amplifier 1. A PIN diode PD is series connected in forward direction with the PIN photodiode PPD.
A high-ohmic feedback resistor RF is connected at the input E and the output A of the amplifier 1. The output voltage U al is supplied to the output A of the amplifier 1. The equalizer 2 is circuited behind the amplifier 1. It is composed of the PIN diode PD1 that is controlled with the voltage US2, a fixed capacitor C3, and a fixed resistor R3.
At the output of. the equalizer 2 there is. the peak detector 4, by way of the capacitor C4', and the two control amplifiers 5 and 6 on the load side which control the amplifier 1 and the equalizer 2.
5 The peak detector 4 gains the voltage actual vle acta.from the output voltage U of buf fer 3. I~t is used by the control amplifier a3 to genert th vlag U 1 and by the control amplifier 6 to generate the voltage U S 2 Furthermore, the output voltage U a 3 of the receiving pre-amplifier is tapped at the output of buffer 3 that is connected to the output of the equalizer 2.
The performance of the receiving pre-amplifier, in conformity with Fig.2, will not be described. The resistance of the PIN diode PD at a small receiving light intensity P Lis smaller than the ratio between the feedback resistor to gain A. This makes the light intensity P L directly proportional to the peak-to-peak value U aj at the output A of the anlifier 1 and the feedback resistor-B As a result of this the output voltage Uactual of the peak detector 14 is zero.
o The control amplifier 5 with its output voltage Us,, and the control amplifier 6 with its output voltage U 32 are dimensioned in such a manner that the desired gain A is generated, and the resistance of the PIN odiode PD1 becomes so small that the equalizer 2 does not equalize.
With a large receiving light intensity P L the resistance of the PIN diode PD becomes smaller than the ratio of the feedback resistorRF to gain A. In this instance, the peak-to-peak voltage value U no alpp longer depends upon the feedback resistor B and reaches it maximum value. The necessary sensitivity is achieved by the high-ohmic feedback 0~00 resistor RE Gain A must be reduced by the control amplifier 5 so that the amplifier 1 is not overdriven. In this case, the upper limit frequency of the amplifier 1 declines in such a manner that its frequency response has to be equalized by the equalizer 2. I~n this case the control amplifier 6 controls the equalizer 2, by way of the PIN diode PD1, with the output voltage U s 2 -6- LIST OF REF'ERENICE SYMBOLS ReceivingZ pre-amplifier for an optical telecoxmunicationi line 1 aaplifier 2 equalizer 3 buffer 4 peak detector ~6 control amplifier APD avalanche photodiode PFD PIN photodiode PD, PD1 PIN diode C1 C5 capacitors E input t 1 9 .2A output P Lreceiving light intensity I A fL

Claims (6)

1. A receiving pre-amplifier having: an amplifier with a feedback resistor coupled from an output thereof to an input thereof, and a reversely connected avalanche photodiode arranged as a receiver diode and coupled via a capacitor to said input, characterised in that a PIN diode is coupled in series and in forward direction to said receiver diode between said receiver diode and said capacitor.
2. A receiving pre-amplifier as claimed in claim 1, whereby the PIN diode is effective, in use of the pre-amplifier, to reduce the gain of the pre-amplifier under the condition that the receiver diode is subjected to light of high intensity, by presenting a low resistance across said input of said amplifier. s
3. A receiving pre-amplifier having: t an amplifier with a feedback resistor coupled from an output thereof to an input thereof, and a reversely connected PIN photodiode arranged as a receiver diode f 20 and coupled via a capacitor to said input, t* characterised in that a PIN diode is coupled in series and in forward direction to said receiver diode between said receiver diode and said capacitor, and that an Sequaliser and a peak detector are coupled in series to the output of the amplifier, said peak detector supplying a voltage U to control amplifiers which control the amplifier 25 and the equaliser. St i 910620,vrsspe.008,krone,7 I7 -8-
4. Receiving pre-amplifier according to claim 3, characterised by the fact that, the equaliser is provided with a PIN diode.
Receiving pre-amplifier according to any one of claims 2 to 4, characterised by the fact that, a buffer is connected on the load side of the equaliser to prevent feedback.
6. A receiving pre-anmplifier substantially as hereinbefore described with reference to the accompanying drawings. a. 9 *00*9 a a. 0 00 0 W W DATED this 20th day of June, 1991 KRONE AKTIENGESELLSCHAFT By its Patent Attorneys DAVIES COLLISON NT0 qj0620,vrsspe.008,krone,S
AU32649/89A 1988-05-26 1989-04-11 Receiving pre-amplifier for an optical telecommunication line Ceased AU614595B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3818168 1988-05-26
DE3818168A DE3818168A1 (en) 1988-05-26 1988-05-26 RECEIVER PRE-AMPLIFIER FOR AN OPTICAL MESSAGE RANGE

Publications (2)

Publication Number Publication Date
AU3264989A AU3264989A (en) 1989-11-30
AU614595B2 true AU614595B2 (en) 1991-09-05

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AU32649/89A Ceased AU614595B2 (en) 1988-05-26 1989-04-11 Receiving pre-amplifier for an optical telecommunication line

Country Status (8)

Country Link
EP (1) EP0344091B1 (en)
AT (1) ATE96955T1 (en)
AU (1) AU614595B2 (en)
DE (2) DE3818168A1 (en)
DK (1) DK169193B1 (en)
ES (1) ES2047704T3 (en)
IL (1) IL89629A0 (en)
NZ (1) NZ228264A (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
AU624676B2 (en) * 1989-02-23 1992-06-18 Alcatel N.V. Optical receiver front end
AU636917B2 (en) * 1989-09-13 1993-05-13 British Telecommunications Public Limited Company An optical detector

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DE4101556A1 (en) * 1990-02-03 1991-08-08 Wild Heerbrugg Ag HIGH RESISTANCE OPTOELECTRONIC RECEIVER
DE4041203A1 (en) * 1990-12-21 1992-06-25 Licentia Gmbh Detection and storing circuitry for extreme min. or max. value of input voltage - has transistor conducting if input voltage falls below storage capacitor voltage but blocking if its exceeds
DE4106778A1 (en) * 1991-03-04 1992-09-10 Standard Elektrik Lorenz Ag OPTICAL-ELECTRIC CONVERTER WITH EXTENDED DYNAMICS
DE4107849A1 (en) * 1991-03-12 1992-09-17 Licentia Gmbh PN photodiode optical amplifier with integral feedback - utilises resistive feedback line to maintain photodiode operating parameters in response to varying light conditions
DE4403985A1 (en) * 1994-02-07 1995-08-10 Nokia Deutschland Gmbh Circuit arrangement for a light signal receiver
DE4403982A1 (en) * 1994-02-07 1995-08-10 Gerd Reime Circuit arrangement for receiving light signals
DE4433872A1 (en) * 1994-09-22 1996-03-28 Kathrein Werke Kg Optical receiver control method
DE19638440A1 (en) * 1996-09-19 1998-04-02 Siemens Ag Optical receiver with a wide dynamic range
US6629638B1 (en) 1997-12-11 2003-10-07 Ceyx Technologies Electro-optic system controller and method of operation
US6494370B1 (en) * 1997-12-11 2002-12-17 Ceyx Technologies Electro-optic system controller and method of operation
DE19821865A1 (en) * 1998-05-15 1999-11-18 Siemens Ag Receiver circuit for optical signal especially infrared signal
WO2001073630A1 (en) * 2000-03-28 2001-10-04 Kabushiki Kaisha Media Technical Apparatus for totaling/analyzing replies using infrared optical communication, and signal amplifier suitable for that apparatus
AU2003202238A1 (en) 2003-01-08 2004-08-10 Ceyx Technologies, Inc. Apparatus and method for measurement of dynamic laser signals
JP2007508754A (en) 2003-10-17 2007-04-05 ツエントルム・ミクロエレクトロニク・ドレスデン・アクチエンゲゼルシャフト Method and apparatus for converting optical received pulse train to electrical output pulse train
CN104737027B (en) * 2012-10-23 2017-02-15 Abb技术有限公司 Apparatus and method for transmitting an analog signal, andanalog signal multiplexer

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AU538568B2 (en) * 1980-09-01 1984-08-16 Telefonaktiebolaget Lm Ericsson (Publ) A method and an arrangement for increasing thedynamic range at the input stage of a receiver in an optical fibre information transmission system
AU548732B2 (en) * 1981-04-14 1986-01-02 Northern Telecom Limited Optical receiver
AU597185B2 (en) * 1987-06-11 1990-05-24 British Telecommunications Public Limited Company Optical receiver circuit and method

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JPS5961236A (en) * 1982-09-29 1984-04-07 Toshiba Corp Receiving circuit system for optical transmission
GB8419843D0 (en) * 1984-08-03 1984-09-05 British Telecomm Optical receivers

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
AU538568B2 (en) * 1980-09-01 1984-08-16 Telefonaktiebolaget Lm Ericsson (Publ) A method and an arrangement for increasing thedynamic range at the input stage of a receiver in an optical fibre information transmission system
AU548732B2 (en) * 1981-04-14 1986-01-02 Northern Telecom Limited Optical receiver
AU597185B2 (en) * 1987-06-11 1990-05-24 British Telecommunications Public Limited Company Optical receiver circuit and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU624676B2 (en) * 1989-02-23 1992-06-18 Alcatel N.V. Optical receiver front end
AU636917B2 (en) * 1989-09-13 1993-05-13 British Telecommunications Public Limited Company An optical detector

Also Published As

Publication number Publication date
EP0344091A3 (en) 1991-08-28
ES2047704T3 (en) 1994-03-01
DE3818168A1 (en) 1990-04-05
IL89629A0 (en) 1989-09-10
DE58906073D1 (en) 1993-12-09
DK169193B1 (en) 1994-09-05
AU3264989A (en) 1989-11-30
ATE96955T1 (en) 1993-11-15
DK255689D0 (en) 1989-05-25
EP0344091B1 (en) 1993-11-03
DE3818168C2 (en) 1991-03-14
NZ228264A (en) 1991-02-26
EP0344091A2 (en) 1989-11-29
DK255689A (en) 1989-11-27

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