Design of Low-loss Non-volatile Optical Phase Shifter based on Lossy Phase Change Material Ge2Sb2Te5 DOI Creative Commons

Lei Niu,

J.X. Zhang,

R. Z. Yu

и другие.

Optics Express, Год журнала: 2024, Номер 32(25), С. 44094 - 44094

Опубликована: Ноя. 8, 2024

We present a low-loss, non-volatile optical phase shifter leveraging the change material (PCM) Ge 2 Sb Te 5 (GST) operating at 1550 nm wavelength. The design is based on coupling mechanism between primary silicon strip waveguide and GST-loaded hybrid waveguide, minimizing direct interaction mode PCM. In amorphous, low-loss state of GST, matching waveguides enables efficient coupling, allowing light to re-couple into after certain length. Upon transitioning crystalline state, GST induces mismatch, confining within circumventing lossy thereby preserving performance. At central wavelength, exhibits loss ~1 dB in both states achieves shift π upon change. A Mach-Zehnder interferometer incorporating this demonstrates switching with low insertion ∼0.6 minimal crosstalk below −20 over 30 bandwidth, underscoring potential GST-based shifters for low-power, high-performance photonic circuits.

Язык: Английский

基于硫基相变材料的存内计算器件与集成芯片（特邀） DOI

许恺 Xu Kai,

贠亦婷 Yun Yiting,

张嘉欣 Zhang Jiaxin

и другие.

Acta Optica Sinica, Год журнала: 2024, Номер 44(15), С. 1513023 - 1513023

Опубликована: Янв. 1, 2024

Процитировано

1
Six Bit Optical Phase States Realized in Nonvolatile Phase Shifter Based on N-Doped Sb2Se3 DOI

Junjie Gong,

Jian Xia, Tianci Wang

и другие.

ACS Photonics, Год журнала: 2024, Номер unknown

Опубликована: Сен. 18, 2024

Язык: Английский

Процитировано

1
Design of Low-loss Non-volatile Optical Phase Shifter based on Lossy Phase Change Material Ge2Sb2Te5 DOI Creative Commons

Lei Niu,

J.X. Zhang,

R. Z. Yu

и другие.

Optics Express, Год журнала: 2024, Номер 32(25), С. 44094 - 44094

Опубликована: Ноя. 8, 2024

We present a low-loss, non-volatile optical phase shifter leveraging the change material (PCM) Ge 2 Sb Te 5 (GST) operating at 1550 nm wavelength. The design is based on coupling mechanism between primary silicon strip waveguide and GST-loaded hybrid waveguide, minimizing direct interaction mode PCM. In amorphous, low-loss state of GST, matching waveguides enables efficient coupling, allowing light to re-couple into after certain length. Upon transitioning crystalline state, GST induces mismatch, confining within circumventing lossy thereby preserving performance. At central wavelength, exhibits loss ~1 dB in both states achieves shift π upon change. A Mach-Zehnder interferometer incorporating this demonstrates switching with low insertion ∼0.6 minimal crosstalk below −20 over 30 bandwidth, underscoring potential GST-based shifters for low-power, high-performance photonic circuits.

Язык: Английский

Процитировано

0