WO2002058283A3 - Optical pre-amplifier apparatus and method for performing gain control - Google Patents

Optical pre-amplifier apparatus and method for performing gain control Download PDF

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Publication number
WO2002058283A3
WO2002058283A3 PCT/US2001/050476 US0150476W WO02058283A3 WO 2002058283 A3 WO2002058283 A3 WO 2002058283A3 US 0150476 W US0150476 W US 0150476W WO 02058283 A3 WO02058283 A3 WO 02058283A3
Authority
WO
WIPO (PCT)
Prior art keywords
gain control
signal
los
power level
received power
Prior art date
Application number
PCT/US2001/050476
Other languages
French (fr)
Other versions
WO2002058283A2 (en
Inventor
Steven W Cornelius
Robert Corwin
Donald J Miller
John Brownlee
Prasad Dasika
Todd Appleton
Original Assignee
Ciena Corp
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
Priority claimed from US09/746,217 external-priority patent/US6424458B1/en
Priority claimed from US09/747,447 external-priority patent/US6522461B1/en
Priority claimed from US09/746,216 external-priority patent/US6490080B2/en
Application filed by Ciena Corp filed Critical Ciena Corp
Priority to AU2002246852A priority Critical patent/AU2002246852A1/en
Publication of WO2002058283A2 publication Critical patent/WO2002058283A2/en
Publication of WO2002058283A3 publication Critical patent/WO2002058283A3/en

Links

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
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/2931—Signal power control using AGC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • 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
    • H04B10/67—Optical arrangements in the receiver
    • 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
    • H04B10/67—Optical arrangements in the receiver
    • H04B10/671—Optical arrangements in the receiver for controlling the input optical signal
    • H04B10/672—Optical arrangements in the receiver for controlling the input optical signal for controlling the power of the input optical signal
    • H04B10/673—Optical arrangements in the receiver for controlling the input optical signal for controlling the power of the input optical signal using an optical preamplifier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/1001—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by controlling the optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1305—Feedback control systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

A receiver node includes an optical amplifier optically coupled to the input of a receiving device such as a PIN photodiode. A controller inputs received power level values from the receiver to perform gain control. The input signal of an optical receiving device is pre-amplified by an optical amplifier such that the amplified signal is within a dynamic range of the receiving device. Upon the occurrence of a LOS (loss of signal) event, the controller sets the gain to a Home Gain value. Thus, when the signal is re-established, a strong signal will not be over amplified and damage the receiver. Gain control is re-established when the LOS event is over. Various methods are used to declare LOS including comparing the received power level or commanded pump power against a threshold. The LOS declaration may also be received from an external device or service channel. Windows are utilized to trigger the gain control algorithm such that when the received power level is inside a first window the gain control is turned off. When the received power level is outside the second window, the gain control is turned on.
PCT/US2001/050476 2000-12-22 2001-12-20 Optical pre-amplifier apparatus and method for performing gain control WO2002058283A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002246852A AU2002246852A1 (en) 2000-12-22 2001-12-20 Optical pre-amplifier apparatus and method for performing gain control

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US09/746,217 US6424458B1 (en) 2000-12-22 2000-12-22 Optical pre-amplifier apparatus and method for receiver performing windowed and gain change rate control
US09/746,217 2000-12-22
US09/747,447 US6522461B1 (en) 2000-12-22 2000-12-22 Optical pre-amplifier apparatus and method for receiver performing gain control according to LOS declaration
US09/746,216 US6490080B2 (en) 2000-12-22 2000-12-22 Gain controlled optically pre-amplified receiver apparatus and method
US09/747,447 2000-12-22
US09/746,216 2000-12-22

Publications (2)

Publication Number Publication Date
WO2002058283A2 WO2002058283A2 (en) 2002-07-25
WO2002058283A3 true WO2002058283A3 (en) 2002-10-31

Family

ID=27419341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/050476 WO2002058283A2 (en) 2000-12-22 2001-12-20 Optical pre-amplifier apparatus and method for performing gain control

Country Status (2)

Country Link
AU (1) AU2002246852A1 (en)
WO (1) WO2002058283A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104980113B (en) * 2015-07-17 2018-01-02 福建一丁芯半导体股份有限公司 High precision photoelectric stream monitoring circuit and preamplifier

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5500756A (en) * 1992-02-28 1996-03-19 Hitachi, Ltd. Optical fiber transmission system and supervision method of the same
US5710660A (en) * 1995-03-08 1998-01-20 Kokusai Denshin Denwa Co., Ltd. Gain-controllable optical amplifier and optical gain-control method
EP0844750A2 (en) * 1996-11-25 1998-05-27 Hitachi, Ltd. Optical amplifier unit control methods, optical amplifier systems and systems which use the methods and amplifier systems
US5912761A (en) * 1998-01-22 1999-06-15 Tyco Submarine Systems Ltd. Apparatus and method for controlling shared optical pump power sources
US5923463A (en) * 1996-10-02 1999-07-13 Nec Corporation Optical amplifier and method for controlling the same
US6064501A (en) * 1996-03-28 2000-05-16 Nortel Networks Corporation Method of determining optical amplifier failures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5500756A (en) * 1992-02-28 1996-03-19 Hitachi, Ltd. Optical fiber transmission system and supervision method of the same
US5710660A (en) * 1995-03-08 1998-01-20 Kokusai Denshin Denwa Co., Ltd. Gain-controllable optical amplifier and optical gain-control method
US6064501A (en) * 1996-03-28 2000-05-16 Nortel Networks Corporation Method of determining optical amplifier failures
US5923463A (en) * 1996-10-02 1999-07-13 Nec Corporation Optical amplifier and method for controlling the same
EP0844750A2 (en) * 1996-11-25 1998-05-27 Hitachi, Ltd. Optical amplifier unit control methods, optical amplifier systems and systems which use the methods and amplifier systems
US5912761A (en) * 1998-01-22 1999-06-15 Tyco Submarine Systems Ltd. Apparatus and method for controlling shared optical pump power sources

Also Published As

Publication number Publication date
WO2002058283A2 (en) 2002-07-25
AU2002246852A1 (en) 2002-07-30

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