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Title: Periodic dielectric structure for production of photonic band gap and devices incorporating the same

A periodic dielectric structure which is capable of producing a photonic band gap and which is capable of practical construction. The periodic structure is formed of a plurality of layers, each layer being formed of a plurality of rods separated by a given spacing. The material of the rods contrasts with the material between the rods to have a refractive index contrast of at least two. The rods in each layer are arranged with their axes parallel and at a given spacing. Adjacent layers are rotated by 90.degree., such that the axes of the rods in any given layer are perpendicular to the axes in its neighbor. Alternating layers (that is, successive layers of rods having their axes parallel such as the first and third layers) are offset such that the rods of one are about at the midpoint between the rods of the other. A four-layer periocity is thus produced, and successive layers are stacked to form a three-dimensional structure which exhibits a photonic band gap. By virtue of forming the device in layers of elongate members, it is found that the device is susceptible of practical construction.
Inventors:
 [1];  [1];  [1]
  1. (Ames, IA)
Issue Date:
OSTI Identifier:
869430
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA) AMES
Patent Number(s):
US 5335240
Application Number:
07/995,248
Contract Number:
W-7405-ENG-82
Research Org:
Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
Country of Publication:
United States
Language:
English
Subject:
periodic; dielectric; structure; production; photonic; band; gap; devices; incorporating; capable; producing; practical; construction; formed; plurality; layers; layer; rods; separated; spacing; material; contrasts; refractive; index; contrast; arranged; axes; parallel; adjacent; rotated; 90; degree; perpendicular; neighbor; alternating; successive; third; offset; midpoint; four-layer; periocity; produced; stacked; form; three-dimensional; exhibits; virtue; forming; device; elongate; found; susceptible; photonic band; dielectric structure; third layer; band gap; alternating layers; refractive index; successive layers; adjacent layers; successive layer; periodic dielectric; periodic structure; devices incorporating; third layers; dimensional structure; /372/