Ultra-Power-Efficient Heterogeneous III-V/Si (De-) Interleavers for DWDM Optical Links
Published in Photonics Research, 2022
Recommended citation: Cheung, Stanley, Geza Kurczveil, Yingtao Hu, Mingye Fu, Yuan Yuan, Di Liang, and Raymond G. Beausoleil. "Ultra-power-efficient heterogeneous III-V/Si MOSCAP (de-) interleavers for DWDM optical links." Photonics Research 10, no. 2 (2022): A22-A34. https://opg.optica.org/prj/abstract.cfm?uri=prj-10-2-a22
We discuss the design and demonstration of various III-V/Si asymmetric Mach-Zehnder interferometer (AMZI) and ring-assisted AMZI (de-) interleavers operating at O-band wavelengths with 65 GHz channel spacing. The wafer-bonded III-V/Si metal-oxide-semiconductor capacitor (MOSCAP) structure facilitates ultra-low-power phase tuning on a heterogeneous platform that allows for complete monolithic transceiver photonic integration. The second- and third-order MOSCAP AMZI (de-) interleavers exhibit cross-talk (XT) levels down to -22 dB and -32 dB with tuning power of 83.0 nW and 53.0 nW, respectively. The one-, two-, and three-ring-assisted MOSCAP AMZI (de-) interleavers have XT levels down to -27 dB, -22 dB, and -20 dB for tuning power of 10.0 nW, 7220.0 nW, and 33.6 nW, respsectively. The leakage current density is measured to be in the range of 1.6 ~ 27 uA/cm^2. To the best of our knowledge, we have demonstrated for the first time, athermal III-V/Si MOSCAP (de-) interleavers with the lowest XT and reconfiguration power consumption on a silicon platform.
Recommended citation: Cheung, Stanley, Geza Kurczveil, Yingtao Hu, Mingye Fu, Yuan Yuan, Di Liang, and Raymond G. Beausoleil. “Ultra-power-efficient heterogeneous III-V/Si MOSCAP (de-) interleavers for DWDM optical links.” Photonics Research 10, no. 2 (2022): A22-A34.