Kangkang Wei, Delong Li, Zhitao Lin, Zhao Cheng, Yuhan Yao, Jia Guo, Yunzheng Wang, Yupeng Zhang, Jianji Dong, Han Zhang, Xinliang Zhang, "All-optical PtSe2 silicon photonic modulator with ultra-high stability," Photonics Res. 8, 1189 (2020)

Search by keywords or author
- Photonics Research
- Vol. 8, Issue 7, 1189 (2020)

Fig. 1. (a) Optical microscopy image of the CVD grown PtSe 2 film. (b) Raman spectrum of PtSe 2 film. (c) AFM image of the transferred PtSe 2 and the typical height profile along the white dashed line. XPS spectra of (d) the PtSe 2 film, (e) the Pt 4f region, and (f) the Se 3d region.

Fig. 2. (a) Microscope image of the all-optical modulator where PtSe 2 film fully covers the whole device. (b) A zoom-in on the part of the MRR shows uniformly transferred thin film. (c) Cross section of the PtSe 2 -on-silicon structure. (d) Transmission spectra of the MRR without (brown) and with (blue) the PtSe 2 film (normalized respectively). (e) All-optical modulation mechanism and experimental setup of the PtSe 2 -based modulator. TLS, tunable laser source; ASE, amplified spontaneous emission; PC, polarization controller; SMF, single-mode fiber; OSA, optical spectrum analyzer; PD, photodetector; OSCP, oscilloscope.

Fig. 3. (a) Static spectral response for different pump powers. (b) Measured resonance shift versus pump power and the corresponding linear fitting curves, for pristine PtSe 2 device (red) and the device after 3-month air exposure (blue).

Fig. 4. (a) Pump light with 100 Hz frequency and (b) the corresponding modulated signal light. (c) Several signal waveforms at different frequencies. (d) V pp versus modulation frequency.

Fig. 5. Infrared thermograms of the PtSe 2 modulator with pump powers of (a) 50 mW and (b) 500 mW. (c) Surface temperature change of the modulator versus pump power.

Fig. 6. (a) Optical microscopy image of the pure silicon MZI. (b) Static spectral response for different pump powers. (c) Measured resonance shift versus pump power and the corresponding fitting curve.
|
Table 1. Comparison of Reported All-Optical Modulators Based on the Photothermal Effect of 2D Materials

Set citation alerts for the article
Please enter your email address