Abstract

We report thorough investigations of a photonic memory with phase change material embedded in a partially etched silicon waveguide, for operation at 1550 nm wavelength. Optical and thermal analyses are performed to study the performance of memory and the effect of deformity in ${\rm{G}}{{\rm{e}}_2}{\rm{S}}{{\rm{b}}_2}{\rm{T}}{{\rm{e}}_5}$ (GST) cells due to volume contraction upon crystallization. The presented approach has better performance than other approaches with GST integrated on top of or filled in a fully etched waveguide. It is shown that a high readout contrast of ${\sim}33\;{\rm{dB}}$ with a low insertion loss of 0.79 dB is possible using an active volume of only $0.0079 \;{{\unicode{x00B5}}}{{\rm{m}}^3}$. The photonic memory presented shows a low power consumption of 0.66 mW and 3.71 mW for switching the memory state from high to low and vice versa, respectively, with zero static power consumption. Using 100 ns and 10 ns pulses for phase transformation from amorphous to crystalline and that from crystalline to amorphous, the energy consumption is 82 pJ and 44.1 pJ, respectively.

© 2022 Optica Publishing Group

Electrically controlled 1 × 2 tunable switch using a phase change material embedded silicon microring

Nadir Ali, Roberto R. Panepucci, Yiwei Xie, Daoxin Dai, and Rajesh Kumar
Appl. Opt. 60(13) 3559-3568 (2021)

Graphene oxide enhanced phase change tolerance of Ge₂Sb₂Se₄Te₁ for all-optical multilevel non-volatile photonics memory

Soon Xin Gan, Kok Bin Ng, Jing Wen Chew, Lian Seng Tey, Wen Sin Chong, Wu Yi Chong, Boon Tong Goh, Choon Kong Lai, Steve Madden, Duk-Yong Choi, and Harith Ahmad
J. Opt. Soc. Am. B 39(11) 3004-3011 (2022)

Reconfigurable hybrid silicon waveguide Bragg filter using ultralow-loss phase-change material

Ting Zhou, Yixiao Gao, Guoxiang Wang, Yimin Chen, Chenjie Gu, Gongxun Bai, Yaocheng Shi, and Xiang Shen
Appl. Opt. 61(7) 1660-1667 (2022)

Experimental investigation of silicon and silicon nitride platforms for phase-change photonic in-memory computing

Xuan Li, Nathan Youngblood, Zengguang Cheng, Santiago Garcia-Cuevas Carrillo, Emanuele Gemo, Wolfram H. P. Pernice, C. David Wright, and Harish Bhaskaran
Optica 7(3) 218-225 (2020)

Nonvolatile multi-level adjustable optical switch based on the phase change material

Zhiqiang Quan, Yuanjian Wan, Xiaoxiao Ma, and Jian Wang
Opt. Express 30(20) 36096-36109 (2022)