Optical transponder

• US 6,832,052 B1
• Filed: 05/17/2000
• Issued: 12/14/2004
• Est. Priority Date: 05/16/2000
• Status: Expired due to Term

• Current Assignee: ECI Telecom Limited (Shaul Shani)
• Original Assignee: ECI Telecom Limited (Shaul Shani)
• Inventors: Marmur, Oren
• Primary Examiner(s): Pascal, Leslie
• Assistant Examiner(s): Leung, Christina Y
• Application Number:
  US09/572,090
• Time in Patent Office: 1,672 Days
• Field of Search: 398/174, 398/175, 398/176, 398/177, 398/178, 398/179, 398/173, 398/180, 398/181, 398/25, 398/18, 702/124, 702/126, 702/198, 370/252, 714/704
• US Class Current: 398/175
• CPC Class Codes: H04B 10/29 Repeaters
• CPC Class Codes: H04J 2203/0057 Operations, administration and maintenance [OAM]
• CPC Class Codes: H04J 3/0602 Systems characterised by the synchronising information used

Abstract

An optical transponder capable of effecting performance monitoring on the electrical signal equivalents of at least two different optical signal types each uniquely identifiable in terms of transmission protocol and/or bit rate. The optical transponder includes an optical/electrical (O/E) receiver module for converting an ingressing optical signal from an optical signal source into an electrical signal; a performance monitoring module for effecting performance monitoring on the electrical signal; and an electrical/optical (E/O) transmitter module for regenerating an egressing optical signal from the electrical signal for feeding to an optical signal destination.

Claims

1. An optical transponder comprising an optical/electrical (O/E) receiver module for converting an ingressing optical signal from an optical signal source into an electrical signal;

a performance monitoring module for effecting performance monitoring on said electrical signal; and

an electrical/optical (E/O) transmitter module for regenerating an egressing optical signal from said electrical signal for feeding to an optical signal destination, wherein said performance monitoring module is capable of effecting performance monitoring on the electrical signal equivalents of at least two different optical signals types each uniquely identifiable in terms of transmission protocol and bit rate, by invoking a suitable performance monitoring scheme for each different optical signal type.

2. The transponder according to claim 1 wherein said transmitter module effects 3R regeneration of egressing optical signals.

3. The transponder according to claim 1 and being externally configurable with the optical signal type of the optical signal.

4. An optical transponder comprising an optical/electrical (O/E) receiver module for converting an ingressing optical signal from an optical signal source into an electrical signal;

a performance monitoring module for effecting performance monitoring on said electrical signal; and

an electrical/optical (E/O) transmitter module for regenerating an egressing optical signal from said electrical signal for feeding to an optical signal destination, wherein said performance monitoring module is capable of effecting performance monitoring on the electrical signal equivalents of at least two different optical signals types each uniquely identifiable in terms of transmission protocol and bit rate, and further comprising an electrical shunt between said O/E receiver module and said E/O transmitter module bypassing said performance monitoring module for shunting an electrical signal converted from an optical signal whose performance monitoring is not supported by said performance monitoring module therearound.

5. An optical transponder comprising an optical/electrical (O/E) receiver module for converting an ingressing optical signal from an optical signal source into an electrical signal;

a performance monitoring module for effecting performance monitoring on said electrical signal; and

an electrical/optical (E/O) transmitter module for regenerating an egressing optical signal from said electrical signal for feeding to an optical signal destination, wherein said performance monitoring module is capable of effecting performance monitoring on the electrical signal equivalents of at least two different optical signals types each uniquely identifiable in terms of transmission protocol and bit rate, said transponder being self-configurable with the optical signal type of the optical signal, wherein said performance monitoring module is capable of distinguishing between the electrical signal equivalents of at least two different optical signal types, and is capable of effecting performance monitoring by invoking a suitable performance monitoring scheme for each identified optical signal type.

6. The transponder according to claim 5 and further comprising a control module for storing a reference pattern dictionary with a plurality of reference patterns each uniquely identifying a different optical signal type, and spotting a reference pattern embedded in the electrical signal for identifying the optical signal type of the optical signal.

7. The transponder according to claim 6 wherein said control module spots a first occurrence of a feature vector uniquely identified with a transmission protocol embedded in the electrical signal at a first location therealong;

identifies the transmission protocol associated with the feature vector and jumps to a second location along the electrical signal downstream from the first location by a fixed byte length associated with the transmission protocol as specified in the reference pattern dictionary; and

spots the second occurrence of the feature vector embedded in the electrical signal at the second location.

8. The transponder according to claim 7 wherein said control module identifies the optical signal type of the optical signal off-line from its equivalent electrical signal.

9. The transponder according to claim 7 wherein said control module identifies the optical signal type of the optical signal on-line from its equivalent electrical signal.

10. The transponder according to claim 6 wherein said control module spots a first occurrence of a feature vector uniquely identified with a transmission protocol embedded in the electrical signal at a first location therealong;

identifies the transmission protocol associated with the feature vector;

reads a byte length field embedded in the electrical signal as determined by the transmission protocol, and jumps to a second location along the electrical signal downstream from the first location by the byte length encoded in the byte length field; and

spots the second occurrence of the feature vector embedded in the electrical signal at the second location.

11. The transponder according to claim 10 wherein said control module identifies the optical signal type of the optical signal off-line from its equivalent electrical signal.

12. The transponder according to claim 10 wherein said control module identifies the optical signal type of the optical signal on-line from its equivalent electrical signal.

13. The transponder according to claim 6 wherein said control module identifies optical signal types ranked by ascending byte length between a pair of immediately consecutive occurrences of their respective feature vectors of their respective reference patterns stored in said reference pattern dictionary.