发明授权
- 专利标题: Method for measuring optical characteristics and system thereof
- 专利标题(中): 测量光学特性的方法及其系统
-
申请号: US11502535申请日: 2006-08-11
-
公开(公告)号: US07756422B2公开(公告)日: 2010-07-13
- 发明人: Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
- 申请人: Takeshi Sakamoto , Kosuke Komaki , Yuji Shimada , Takuji Maeda
- 申请人地址: JP Kawasaki
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JP Kawasaki
- 代理机构: Staas & Halsey LLP
- 优先权: JP2006-073538 20060316
- 主分类号: H04B10/00
- IPC分类号: H04B10/00
摘要:
During initial start-up of an optical communication system, an ASE reference span loss is calculated based on transmitting power and received power of ASE light generated by an optical amplifier, and an OSC reference span loss is calculated based on the transmitting power and the received power of OSC light. During normal operation of the optical communication system, a span loss is calculated using the OSC light, and an amount of change in the span loss representing a difference between the span loss and the OSC reference span loss is calculated. A current span loss between a transmitting station and a receiving station is calculated by adding the amount of change in the span loss to the ASE reference span loss.