[Faramarz E. SerajiParticipant]

Please explain what you are doing to see the basics of your needs?

[Faramarz E. SerajiParticipant]

Dear CHANDRASENAN,

1. As it is said, to split a light into two counter-propagating light waves, one way is to use Sagnac loop with different configurations depending on the applications.

2. In Q2, if you mean practically how to set the polarization, you can use a Polaroid sheet, easily available in Market.

Please describe your work for more help.

Best wishes

Faramarz E. Seraji

[Faramarz E. SerajiParticipant]

Dear Kumar,

To use FBG sensor and Phi-OTDR in one project, depends on how you defined the aim in your project. Or, you may mean otherwise!

Best Wishes

F.E.Seraji
ITRC, Tehran

[Faramarz E. SerajiParticipant]

(Awaiting moderation)