A Two-Mode (De)Multiplexer Based on Multimode Interferometer Coupler and Y-Junction on InP Substrate

IEEE Photonics Journal

Huitao Wang¹  Dan Lu¹  Ruikang Zhang²  Chen Ji²  Fei Guo² 

[1] Devices, Inst. of Semicond., Beijing, China;;Beijing Key Lab. of Low Dimensional Semicond. Mater. &

关键词: Multiplexing;    semiconductor waveguides;    phase shifters;   

DOI  :  10.1109/JPHOT.2016.2523986

来源: DOAJ

【 摘 要 】

A two-mode (de)multiplexer [(DE)MUX] based on a multimode interferometer coupler and a symmetric Y-junction coupler is proposed and demonstrated on an InP substrate. By introducing a phase shifter section with a thickness-detuned core layer, a miniature two-mode (DE)MUX with mode conversion of 100% is designed and demonstrated. Simulation shows that the total length of the device can be as small as 446 μm: much shorter than other mode (DE) MUX in InP materials. Within the entire C-band wavelength range, the calculated insertion loss of the device is less than 0.7 dB, and the crosstalk is below -24 dB. A mode (DE) MUX was fabricated in InP materials, and the mode conversion of the TE₀ and TE₁ modes were successfully demonstrated.

【 授权许可】

Unknown