- This topic has 13 replies, 3 voices, and was last updated 10 years ago by Damian Marek.
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September 10, 2014 at 7:05 pm #13712Jaffar Emad KadumParticipant
Hi
Please I want to use Dual-port Linb MZM as phase modulator, what are the parameters ( switching bias voltage, switching RF voltage, bias voltage1, bias voltage2 and Vpi) should I use to operate the dual drive MZM as pure phase modulator?
Regards
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September 11, 2014 at 7:16 pm #13730RavilParticipant
The parameters are dependent on the frequency range you are working with. I’d suggest to take a look at the attached paper:
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September 12, 2014 at 4:03 am #13736Jaffar Emad KadumParticipant
Thank you Ravil for reply, but I can not find the attached paper.!
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September 12, 2014 at 7:11 pm #13739RavilParticipant
Appologize, I had some problems with attaching files before. Try one more time here:
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September 13, 2014 at 10:20 am #13749Jaffar Emad KadumParticipant
Dear Ravil please can you paste the text of the paper here because there is no attachment
Regards -
September 13, 2014 at 3:11 pm #13751RavilParticipant
Sure, for some reason I have some problems with attaching files. Here is the name of the paper and the author:
“A Review of Lithium Niobate Modulators for Fiber-Optic Communications Systems”
Ed L. Wooten, Member, IEEE, Karl M. Kissa, Member, IEEE, Alfredo Yi-Yan,
Edmond J. Murphy, Senior Member, IEEE, Donald A. Lafaw, Peter F. Hallemeier, Member, IEEE,
David Maack, Member, IEEE, Daniel V. Attanasio, Daniel J. Fritz, Gregory J. McBrien, Member, IEEE,
and Donald E. Bossi, Member, IEEE-
September 16, 2014 at 9:00 am #13789Damian MarekParticipant
Hi Ravil,
As you can see we are experiencing some technical problems with attaching files right now. The problem seems limited to the firefox browser, so if you wish try Chrome it should work. Either way this issue will be fixed soon.
Thanks
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September 15, 2014 at 12:54 pm #13777Jaffar Emad KadumParticipant
There is a certain configuration of dual port MZM for each application. I hope from OPTIWAVE team to give us the setting for phase modulator.
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September 15, 2014 at 1:46 pm #13778Damian MarekParticipant
Setting a dual driven modulator to work as a phase modulator is as simple as setting the two voltages on both arms to the same value. From the default parameters change the modulation voltage 2 as 2 V.
I have attached a project file demonstrating this behavior.
Regards
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September 15, 2014 at 3:36 pm #13780Jaffar Emad KadumParticipant
Thanx damian for answer. I have optisystem 12.0 and the file doesnot work. Which system are you build the file?
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September 16, 2014 at 9:05 am #13790Damian MarekParticipant
I’m using OptiSystem 13.0. I attached a pic that gives the parameters and results you should be looking for. You can also use the Phase Modulator component, which is very simple to use.
Cheers
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September 16, 2014 at 11:30 am #13796Jaffar Emad KadumParticipant
Thank you Damian
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October 27, 2014 at 12:04 pm #14605Jaffar Emad KadumParticipant
Dear Damian,
I would like to ask you about the following my previous question regarding Linbo3 Phase Modulator, Now how I can control the phase modulation index of this configuration? what is the parameter should I change to get for example (40 degree) phase modulation index? -
October 27, 2014 at 1:14 pm #14606Damian MarekParticipant
Keep the bias voltage the same, but change the peak to peak voltage to a smaller value. I believe the project file I sent you was a 90 degree phase shift, so if you scaled the voltages to 4/9’s of their value then you should get a 40 degree phase shift.
That should work!
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September 4, 2018 at 7:41 am #49435ibrahim AkkayaParticipant
Dear Damian,
I have downloaded and opened the osd file which you shared. However, when I run the file, the output of Optical Time Domain Visualizer_1 and _2 have constant intensities. It couldn’t modulate the laser. Could you check and help please?
Thanks for your attention
BYW: I’m very new at Optisystem.
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