光功率常用查询表
更新时间 Sep 26th 2022 浏览量 2939
通光率与插损的关系
|
Loss |
Power |
|
(dB) |
Ratio(%) |
|
0.1 |
97.72 |
|
0.2 |
95.5 |
|
0.3 |
93.33 |
|
0.4 |
91.2 |
|
0.5 |
89.13 |
|
0.6 |
87.1 |
|
0.7 |
85.11 |
|
0.8 |
83.18 |
|
0.9 |
81.28 |
|
1 |
79.43 |
|
2 |
63.1 |
|
3 |
50.12 |
|
4 |
39.81 |
|
5 |
31.62 |
|
6 |
25.12 |
|
7 |
19.95 |
|
8 |
15.85 |
|
9 |
12.59 |
|
10 |
10 |
|
20 |
1 |
|
30 |
0.1 |
|
40 |
0.01 |
|
50 |
0.001 |
|
60 |
0.0001 |
光功率转换表
|
mW |
dBm |
mW |
dBm |
|
20 |
13.01 |
0.4 |
-3.98 |
|
19 |
12.79 |
0.3 |
-5.23 |
|
18 |
12.55 |
0.2 |
-6.99 |
|
17 |
12.30 |
0.1 |
-10.00 |
|
16 |
12.04 |
0.09 |
-10.46 |
|
15 |
11.76 |
0.08 |
-10.97 |
|
14 |
11.46 |
0.07 |
-11.55 |
|
13 |
11.14 |
0.06 |
-12.22 |
|
12 |
10.79 |
0.05 |
-13.01 |
|
11 |
10.41 |
0.04 |
-13.98 |
|
10 |
10.00 |
0.03 |
-15.23 |
|
9 |
9.54 |
0.02 |
-16.99 |
|
8 |
9.03 |
0.01 |
-20.00 |
|
7 |
8.45 |
0.009 |
-20.46 |
|
6 |
7.78 |
0.008 |
-20.97 |
|
5 |
6.99 |
0.007 |
-21.55 |
|
4 |
6.02 |
0.006 |
-22.22 |
|
3 |
4.77 |
0.005 |
-23.01 |
|
2 |
3.01 |
0.004 |
-23.98 |
|
1 |
0.00 |
0.003 |
-25.23 |
|
0.9 |
-0.46 |
0.002 |
-26.99 |
|
0.8 |
-0.97 |
0.001 |
-30.00 |
|
0.7 |
-1.55 |
0.0001 |
-40.00 |
|
0.6 |
-2.22 |
0.00001 |
-50.00 |
|
0.5 |
-3.01 |
0.000001 |
-60.00 |
分光比与插入损耗关系
|
分光比(%) |
典型插入损耗(dB) |
最大插入损耗(dB) |
|
1/99 |
20.1/0.2 |
21.6/0.3 |
|
2/98 |
17.1/0.2 |
20.0/0.3 |
|
5/95 |
13.2/0.4 |
14.9/0.6 |
|
10/90 |
10.1/0.6 |
11.2/0.8 |
|
15/85 |
8.4/0.9 |
9.2/1.0 |
|
20/80 |
7.1/1.1 |
7.9/1.3 |
|
25/75 |
6.2/1.4 |
6.8/1.6 |
|
30/70 |
5.4/1.7 |
5.9/1.9 |
|
35/65 |
4.7/2.0 |
5.3/2.3 |
|
40/60 |
4.1/2.4 |
4.6/2.7 |
|
45/55 |
3.6/2.8 |
4.0/3.1 |
|
50/50 |
3.1/3.1 |
3.5/3.5 |
分路器分光比与损耗关系：损耗=10*log10（分光比/100）
例如：分光97%时的损耗=10*log10（97/100）=-0.13dB
计算公式为理论值，实际还要加上连接头的损耗（每个约0.1），以及实际生产工艺的差别所带来的误差。但偏差不会太大。
光功率常用查询表
射频知识
·功率/电平（dBm）：放大器的输出能力，一般单位为w、mw、dBm。dBm是取1mw作基准值，以分贝表示的绝对功率电平。
换算公式：
dBm=10lgw
|
mW |
dBm |
mW |
dBm |
|
100 |
20 |
128 |
21 |
|
80 |
19 |
160 |
22 |
|
64 |
18 |
200 |
23 |
|
50 |
17 |
250 |
24 |
|
40 |
16 |
320 |
25 |
|
32 |
15 |
400 |
26 |
|
25 |
14 |
500 |
27 |
|
20 |
13.01 |
0.4 |
-3.98 |
|
19 |
12.79 |
0.3 |
-5.23 |
|
18 |
12.55 |
0.2 |
-6.99 |
|
17 |
12.30 |
0.1 |
-10.00 |
|
16 |
12.04 |
0.09 |
-10.46 |
|
15 |
11.76 |
0.08 |
-10.97 |
|
14 |
11.46 |
0.07 |
-11.55 |
|
13 |
11.14 |
0.06 |
-12.22 |
|
12 |
10.79 |
0.05 |
-13.01 |
|
11 |
10.41 |
0.04 |
-13.98 |
|
10 |
10.00 |
0.03 |
-15.23 |
|
9 |
9.54 |
0.02 |
-16.99 |
|
8 |
9.03 |
0.01 |
-20.00 |
|
7 |
8.45 |
0.009 |
-20.46 |
|
6 |
7.78 |
0.008 |
-20.97 |
|
5 |
6.99 |
0.007 |
-21.55 |
|
4 |
6.02 |
0.006 |
-22.22 |
|
3 |
4.77 |
0.005 |
-23.01 |
|
2 |
3.01 |
0.004 |
-23.98 |
|
1 |
0.00 |
0.003 |
-25.23 |
|
0.9 |
-0.46 |
0.002 |
-26.99 |
|
0.8 |
-0.97 |
0.001 |
-30.00 |
|
0.7 |
-1.55 |
0.0001 |
-40.00 |
|
0.6 |
-2.22 |
0.00001 |
-50.00 |
|
0.5 |
-3.01 |
0.000001 |
-60.00 |
