A Caltech Library Service

Large-Scale Crosstalk-Corrected Thermo-Optic Phase Shifter Arrays in Silicon Photonics

Gurses, B. Volkan and Fatemi, Reza and Khachaturian, Aroutin and Hajimiri, Ali (2022) Large-Scale Crosstalk-Corrected Thermo-Optic Phase Shifter Arrays in Silicon Photonics. IEEE Journal of Selected Topics in Quantum Electronics, 28 (6). Art. No. 6101009. ISSN 1077-260X. doi:10.1109/JSTQE.2022.3189965.

[img] PDF - Accepted Version
Creative Commons Attribution.


Use this Persistent URL to link to this item:


We introduce a thermo-optic phase shifter (TOPS) array architecture with independent phase control of each phase shifter for large-scale and high-density photonic integrated circuits with two different control schemes: pulse amplitude modulation (PAM) and pulse width modulation (PWM). We realize a compact spiral TOPS and a 288-element high-density row-column TOPS array with this architecture and drive TOPS with waveforms of both control schemes and of different array sizes. We present a thermal excitation model and a finite difference method-based simulation to simulate large-scale TOPS arrays and compare both schemes experimentally and theoretically. We also analyze the effects of thermal crosstalk in the realized TOPS array and implement a thermal crosstalk correction algorithm with the developed model. The high-density TOPS array architecture and the thermal crosstalk correction algorithm pave the way for high-density TOPS arrays with independent phase control in large-scale photonic integrated circuits interfaced with electronics limited in voltage swing and bandwidth.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Gurses, B. Volkan0000-0001-8184-208X
Fatemi, Reza0000-0001-9081-2608
Khachaturian, Aroutin0000-0001-8304-3302
Hajimiri, Ali0000-0001-6736-8019
Additional Information:© 2022 IEEE. Manuscript received 3 February 2022; revised 4 June 2022; accepted 13 June 2022. Date of publication 12 July 2022; date of current version 27 July 2022. This work was supported by the Caltech Rothenberg Innovation Initiative (RI2) program.
Funding AgencyGrant Number
Rothenberg Innovation Initiative (RI2)UNSPECIFIED
Subject Keywords:Optical phase shifters, thermo-optic effects, time division multiplexing, crosstalk, large-scale circuits, integrated optoelectronics, silicon
Issue or Number:6
Record Number:CaltechAUTHORS:20220712-193859173
Persistent URL:
Official Citation:B. V. Gurses, R. Fatemi, A. Khachaturian and A. Hajimiri, "Large-Scale Crosstalk-Corrected Thermo-Optic Phase Shifter Arrays in Silicon Photonics," in IEEE Journal of Selected Topics in Quantum Electronics, vol. 28, no. 6: High Density Integr. Multipurpose Photon. Circ., pp. 1-9, Nov.-Dec. 2022, Art no. 6101009, doi: 10.1109/JSTQE.2022.3189965
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115505
Deposited By: George Porter
Deposited On:12 Jul 2022 21:49
Last Modified:12 Aug 2022 19:46

Repository Staff Only: item control page