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Title: A versatile optical junction using photonic band-gap guidance and self collimation

We show that it is possible to design two photonic crystal (PC) structures such that an optical beam of desired wavelength gets guided within the line defect of the first structure (photonic band gap guidance) and the same beam gets guided in the second structure by self-collimation. Using two dimensional simulation of a design made of the combination of these two structures, we propose an optical junction that allows for crossing of two optical signals of same wavelength and same polarization with very low crosstalk. Moreover, the junction can be operated at number of frequencies in a wide range. Crossing of multiple beams with very low cross talk is also possible. The proposed junction should be important in future integrated photonic circuits.
Authors:
;  [1]
  1. Centre for Applied Physics, Central University of Jharkhand, Ranchi 835205 (India)
Publication Date:
OSTI Identifier:
22350777
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BEAMS; CRYSTALS; ELECTRIC CONTACTS; LINE DEFECTS; POLARIZATION; SEMICONDUCTOR JUNCTIONS; SIMULATION; TWO-DIMENSIONAL CALCULATIONS; WAVELENGTHS