Table 1 Comparison of reported programmable optical signal processor.

From: Photonic integrated field-programmable disk array signal processor

Year

Ref.

Material

Mesh structure

Size

Operation approach

Functionality

2015

20

Si3N4

Square

7 × 3.5 mm2

MZI coupler

-Notch filter

-Hilbert transformer,

-Bandpass filter,

-Delay line

2016

39

III–V

Ring

1.5 × 2 mm2

Ring resonator

-Integrator

-Differentiator

-Hilbert transformer

2017

21

SOI

Hexagonal

15 × 20 mm2

MZI coupler

21 functionalitiesa

2019

Our work

SOI

Square

0.4 × 0.4 mm2

MDR

-Demultiplexer

-Flat-top filter

-Tunable delay line

-Differentiator

-Beamforming network

-Optical pulse shaper

  1. a21 different functionalities include unbalanced FIR Mach–Zehnder filters, ring cavities, complex CROW, SCISSOR, and ring-loaded MZI filters, and multiple input–multiple output linear-optic transformation devices, including a C-NOT gate
Back to article page