Global Patent Index - EP 1005707 A1

EP 1005707 A1 2000-06-07 - GAIN TILT CONTROL WITH MID-STAGE ATTENUATORS IN ERBIUM-DOPED FIBER AMPLIFIERS

Title (en)

GAIN TILT CONTROL WITH MID-STAGE ATTENUATORS IN ERBIUM-DOPED FIBER AMPLIFIERS

Title (de)

VERSTÄRKUNGSANSTIEGSSTEUERUNG MIT ZWISCHENDÄMPFUNGSGLIEDERN IN ERBIUM-DOTIERTEN FASERVERSTÄRKERN

Title (fr)

COMMANDE D'INCLINAISON DE GAIN COMPRENANT DES ATTENUATEURS A NIVEAU INTERMEDIAIRE DANS DES AMPLIFICATEURS A FIBRE DOPEE A L'ERBIUM

Publication

EP 1005707 A1 (EN)

Application

EP 99930403 A

Priority

  • US 9913812 W
  • US 8996798 P

Abstract (en)

[origin: WO9966610A1] Gain tilt control in erbium-doped fiber amplifiers is realized by adjusting the attenuation of mid-stage variable attenuators situated between multiple stages of the erbium-doped fiber amplifier. Positive power tilt in input signals is compensated by increasing attenuator loss while negative power tilt is compensated by decreasing the attenuator loss.

IPC 1-7 (main, further and additional classification)

H01S 3/00

IPC 8 full level (invention and additional information)

H01S 3/06 (2006.01); H01S 3/067 (2006.01); H01S 3/10 (2006.01); H04B 10/291 (2013.01); H04B 10/294 (2013.01); H04J 14/02 (2006.01); H01S 3/094 (2006.01)

CPC (invention and additional information)

H04B 10/2912 (2013.01); H01S 3/06758 (2013.01); H04B 10/291 (2013.01); H04B 10/2941 (2013.01); H04J 14/0221 (2013.01); H01S 3/094096 (2013.01); H04B 2210/003 (2013.01)

Citation (search report)

See references of WO 9966610A1

Designated contracting state (EPC)

GB

EPO simple patent family

WO 9966610 A1 19991223; AU 4695199 A 20000105; CN 1310872 A 20010829; EP 1005707 A1 20000607; JP 2002518855 A 20020625

INPADOC legal status


2003-04-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021002

2002-07-03 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020522

2001-07-25 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: AGERE SYSTEMS OPTOELECTRONICS GUARDIAN CORPORATION

2000-06-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000228

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): GB