Kavli Affiliate: Ali Hajimiri
| First 5 Authors: Volkan Gurses, Reza Fatemi, Aroutin Khachaturian, Ali Hajimiri,
| Summary:
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.
| Search Query: ArXiv Query: search_query=au:”Ali Hajimiri”&id_list=&start=0&max_results=10