Abstract

A comparator is one of the important combinational logic circuits. An optical comparator was designed and simulated based on photonic crystals. Point and linear defects were also used in the proposed optical comparator. The use of simple defect paths and the absence of ring resonators reduced the complexity of the structure. One of the characteristics of the proposed structure is that it has a very small size, which leads to the suitability of this comparator for optical integrated circuits. Another characteristic of this comparator is an increase in the optical power difference for the logical values “0” and “1,” which reduces the bit detection error in the output. This comparator is also designed to operate on the 1.55 µm wavelength, and it can be used in today’s optical telecommunication circuits.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Ultra-compact ultra-fast 1-bit comparator based on a two-dimensional nonlinear photonic crystal structure

Zahra Seraj, Mohammad Soroosh, and Navid Alaei-Sheini
Appl. Opt. 59(3) 811-816 (2020)

Application of photonic-crystal-based nonlinear ring resonators for realizing an all-optical comparator

Lian Zhu, Farhad Mehdizadeh, and Reza Talebzadeh
Appl. Opt. 58(30) 8316-8321 (2019)

Optimized high-speed all-optical 2-bit ADCbased on two-dimensional photonic crystal nanoresonators

Afshin Taheri, Mahmood Seifouri, and Saeed Olyaee
Appl. Opt. 60(1) 60-66 (2021)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription