伊朗采购需求：电光调制器、光强度调制器、光探测器、平衡光电探测器、激光光源、光放大器

I would like to inquire about the Rof-ROFBox regarding its modulation method. Specifically, does it rely on an external electro-optic modulator, or does it implement direct modulation via the laser driver? Additionally, I'm interested in knowing which of your products utilize an external electro-optic modulator. It would be great to get details on the applications and benefits of these products as well. Thank you!