Dylan,

I contacted Anritsu, and they only support 1550nm for now, and their list
price is about 25K. Do you know of any other vendors that are selling
calibrated photodiodes (I think Agilent is only selling full systems)? Can
you give me an order of magnitude estimate as to how much would it cost
from NIST?

Thanks,
Cory




Dylan Williams
<dylan@...
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Sent by: mtt-11@yahoogroups.com
mtt-11@yahoogroup cc
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Subject
Re: [mtt-11] What is the Most
07/31/2007 07:38 Practical Method to Add Optical
AM Capabilities to an 8510C?


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mtt-11@yahoogroup
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Hello Cory,

I believe that you are correct that the most inexpensive way to
proceed is to use a calibrated photodiode. I am not sure how much Anritsu
sells their calibrated photodiodes for, but I would imagine that would be
less expensive than purchasing a photodiode and calibration directly from
NIST.

Dylan

At 07:25 PM 7/30/2007, you wrote:

Hi,

I am looking into what is the most practical method to add optical
capabilities to my 8510C. I need to be able to measure communication
laser diodes and photodiodes over the wavelength range of 850nm to
1550nm (from 1Gbps to 10Gbps). I don't have the budget to purchase
an off the shelf lightwave component analyzer (especially since I
probably need more than one to cover this range), so I am looking
into adding calibrated laser sources and detectors to my existing
VNA. From what I gather the biggest challenge is to calibrate the
detector, and then that can be used to calibrate the source.

I see many papers regarding calibrating photodetectors, but this
seems to be fairly involved. Is this the only practical option, or
does anyone sell reasonably priced calibrated photodetectors? So
far, I have only seen a single wavelength model by Anritsu.

For the light source, is there anything good that is commercially
available, or am I best off building something myself. For home
built, is it better to directly modulate or use and external
modulator?

Any feedback is appreciated.

Thanks,
Cory





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Dylan Williams <dylan@...>
NIST 818.01 <dylan@...>
325 Broadway [+1] (303)497-3138 (TEL)
Boulder CO 80305 USA [+1] (303)497-3970 (FAX)
http://www.boulder.nist.gov/dylan/
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