Author Topic: Reverse engineering a SFP transceiver  (Read 1321 times)

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Offline ali_asadzadehTopic starter

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Reverse engineering a SFP transceiver
« on: December 17, 2019, 06:35:50 am »
Hi,
Today I got my hands on a SFP transceiver, they are very nice >:D



I wonder what's inside them and how they are built! give me hints to open it with less destruction, I will share everything in here,
I think the main problem with these things is to figure out the laser and the receiver, maybe the rest is easy to figure out.
My chinese  friends, your input and help in here to find the parts in here or find chinese manufacturers would be highly appreciated ;)
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Offline hamster_nz

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Re: Reverse engineering a SFP transceiver
« Reply #1 on: December 17, 2019, 06:47:51 am »
Oh, a long wave one.  Strongly recommend you don't power it up.

You won't see anything (it has an infrared laser) , but has plenty of potential to cause damage to your retinas.
Gaze not into the abyss, lest you become recognized as an abyss domain expert, and they expect you keep gazing into the damn thing.
 

Offline ali_asadzadehTopic starter

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Re: Reverse engineering a SFP transceiver
« Reply #2 on: December 17, 2019, 07:56:47 am »
My intention is to, Do not turn it on, take it apart ;D >:D
ASiDesigner, Stands for Application specific intelligent devices
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Offline ali_asadzadehTopic starter

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Re: Reverse engineering a SFP transceiver
« Reply #3 on: December 17, 2019, 11:09:26 am »
I have opened it up >:D
On one of the Diodes it's a paper with this numbers L9E7U3109
the other one with the can on top of it, it has nothing, any Idea about the Laser and receiver part number and prices? who makes them and who is the chinese manufacturer?


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Offline ali_asadzadehTopic starter

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Re: Reverse engineering a SFP transceiver
« Reply #4 on: December 19, 2019, 01:43:45 pm »
Guys do you have any info on the laser and the receiver? who will make them in china? or other places?
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Offline mikerj

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Re: Reverse engineering a SFP transceiver
« Reply #5 on: December 19, 2019, 05:35:23 pm »
This will use a directly modulated VCSEL laser and a simple PIN diode receiver, there is nothing very exciting here.  The 10Gbit modules use either an eletro absorption or mach-zehnder modulator and may also use an APD receiver depending on reach.

VCSELs are very cheap as a bare chip so they might assemble their own laser package.  You can buy 1310nm lasers like this with receptacle or pigtail from Alibaba etc. they are not expensive.  Even the full SFP or XFP modules from China are very cheap.
« Last Edit: December 19, 2019, 11:31:01 pm by mikerj »
 

Offline ali_asadzadehTopic starter

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Re: Reverse engineering a SFP transceiver
« Reply #6 on: December 21, 2019, 06:44:56 am »
Quote
mikerj
Thanks mikerj, Do you know any specific manufacturer that I can buy in volumes from them, we need to design a custom design solution for our needs, so I need to build it and mass produce it for our needs.
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