Abstract
We demonstrated all-optical intensity modulator based on polarization-dependent graphene-covered microfiber (GMF) waveguide. By controlling the polarization mode of incident light, a greatly adjustable enhanced interaction between the propagating light and the graphene can be obtained via the evanescent field of the microfiber. By employing 980-nm pump light and 1550-nm signal light in continuous wave, the strong light–graphene interaction enables a maximum modulation depth of ∼20.86 dB, and by pumping 980 nm wave pulses, we obtained the temporal response characteristics of signal light with modulation rate of 5.13 kHz. This all-optical intensity modulator is compatible with optical fiber systems, and features with ease of fabrication, and steerable high modulation depth, which show potential in graphene's applications such as all-optical switching and all-optical communications.
| Original language | English |
|---|---|
| Article number | 7105708 |
| Number of pages | 9 |
| Journal | IEEE Photonics Journal |
| Volume | 9 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 29 Sep 2017 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- fiber optics systems
- Graphene
- Optical fibers
- Optical modulation
- Optical polarization
- Optical pumping
- Photonic materials
- Waveguide devices