timedate
Member level 5
Hi, all
Does anybody know how large is depletion layer width for photodiode?
For example, for photodiode S3590-06, which has cut-off frequency of 20MHz, and its depletion layer width is 500um.
But what about the other photodiode, for example, a photodiode with 100MHz or 50MHz?
I know, with increase the bandwidth, the depletion layer should be reduced to give a fast transit time.
But is there a formula or a rule of thumb says that at each cut-off frequency what is the depletion layer width should be fabricated.
For example, with 100MHz, 50um should be use, for 1GHz, 10um is proffered.
Thanks all
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If there is not such formula, may somebody tell me what is typical depletion layer width for 25M 50M and 100MHz photodiode.
Does anybody know how large is depletion layer width for photodiode?
For example, for photodiode S3590-06, which has cut-off frequency of 20MHz, and its depletion layer width is 500um.
But what about the other photodiode, for example, a photodiode with 100MHz or 50MHz?
I know, with increase the bandwidth, the depletion layer should be reduced to give a fast transit time.
But is there a formula or a rule of thumb says that at each cut-off frequency what is the depletion layer width should be fabricated.
For example, with 100MHz, 50um should be use, for 1GHz, 10um is proffered.
Thanks all
--------------------------------
If there is not such formula, may somebody tell me what is typical depletion layer width for 25M 50M and 100MHz photodiode.
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