发明名称 |
ASSESSMENT METHOD FOR OUTPUT OPTICAL POWER DECREASE IN OPTICAL AMPLIFICATION DEVICE, AND OPTICAL AMPLIFICATION SYSTEM |
摘要 |
A current I i supplied to a pumping light source 20 is detected and time-averaged with a predetermined time constant to calculate a time-averaged current I av . An optical output power P i outputted from an amplifying optical fiber 12 is detected and time-averaged with the predetermined time constant to calculate a time-averaged optical output power P av . A reference optical output power P r and a reference current I r supplied to the pumping light source 20 when the reference optical output power P r is outputted from an optical fiber laser apparatus 1 are used to calculate an optical output power expectation value P ex = I av × P r / I r . The time-averaged optical output power P av and the optical output power expectation value P ex are compared with each other to determine a decrease of an optical output power of the optical amplifier apparatus 1 based on the comparison result. |
申请公布号 |
EP2955801(A4) |
申请公布日期 |
2016.11.09 |
申请号 |
EP20140776242 |
申请日期 |
2014.01.16 |
申请人 |
FUJIKURA LTD. |
发明人 |
SHIMADA, NORIAKI |
分类号 |
H01S3/10;H01S3/00;H01S3/067;H01S3/094;H01S3/13;H01S3/131 |
主分类号 |
H01S3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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