Solid type single polarization fiber and apparatus

Details Solid type single polarization fiber and apparatus Solid type single polarization fiber and apparatus

2005-11-29

2005-11-29

Lee, John D. (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S127000, C385S100000, C385S011000

Reexamination Certificate

active

06970632

ABSTRACT:
Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, the moat (40) having a second refractive index (n2), an outer dimension (c) and an outer dimension (d), and a cladding (50) surrounding the moat (40), the cladding (50) having a third refractive index (n3), wherein n1>n3>n2, a ratio of b/a is between 1.5 and 5.0, and a ratio of d/a is between 2.0 and 7.0. The fiber supports a single (one and only one) polarization within a Single Polarization Band (SPB). The fiber (20) may be coupled to optical components in apparatus where single polarization properties are desired.

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