Abstract

The performance of a family of dual GRIN lens multiplexers has been investigated with a ray tracing analysis. The dependence of the device’s insertion loss on several lens and input/output fiber parameters was examined. Several versions of this multiplexer were built and characterized. Certain versions were found to provide low loss and a relative insertion loss independence of wavelength.

© 1983 Optical Society of America

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References

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  1. S. Sugimoto et al., in Technical Digest, First International Conference on Integrated Optics and Optical Fiber Communication (Optical Society of America, Washington, D.C., 1977), paper C7-4.
  2. S. Sugimoto et al., Electron. Lett. 13, 680 (1977).
    [CrossRef]
  3. A. K. Ghatak, K. Thyagarajan, Contemporary Optics (Plenum, New York, 1978).
    [CrossRef]
  4. K. Thyagarajan, Aruna Rohra, A. K. Ghatak, Appl. Opt. 19, 1061 (1980).
    [CrossRef] [PubMed]

1980

1977

S. Sugimoto et al., Electron. Lett. 13, 680 (1977).
[CrossRef]

Ghatak, A. K.

K. Thyagarajan, Aruna Rohra, A. K. Ghatak, Appl. Opt. 19, 1061 (1980).
[CrossRef] [PubMed]

A. K. Ghatak, K. Thyagarajan, Contemporary Optics (Plenum, New York, 1978).
[CrossRef]

Rohra, Aruna

Sugimoto, S.

S. Sugimoto et al., Electron. Lett. 13, 680 (1977).
[CrossRef]

S. Sugimoto et al., in Technical Digest, First International Conference on Integrated Optics and Optical Fiber Communication (Optical Society of America, Washington, D.C., 1977), paper C7-4.

Thyagarajan, K.

K. Thyagarajan, Aruna Rohra, A. K. Ghatak, Appl. Opt. 19, 1061 (1980).
[CrossRef] [PubMed]

A. K. Ghatak, K. Thyagarajan, Contemporary Optics (Plenum, New York, 1978).
[CrossRef]

Appl. Opt.

Electron. Lett.

S. Sugimoto et al., Electron. Lett. 13, 680 (1977).
[CrossRef]

Other

A. K. Ghatak, K. Thyagarajan, Contemporary Optics (Plenum, New York, 1978).
[CrossRef]

S. Sugimoto et al., in Technical Digest, First International Conference on Integrated Optics and Optical Fiber Communication (Optical Society of America, Washington, D.C., 1977), paper C7-4.

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Figures (9)

Fig. 1
Fig. 1

Configuration of the dual GRIN lens multiplexer.

Fig. 2
Fig. 2

Radiation from a point source.

Fig. 3
Fig. 3

Insertion loss vs number of point sources for the central channel with a 50-μm graded-index input fiber and a 50-μm graded index output fiber.

Fig. 4
Fig. 4

Lens configurations for seven-, four-, and three-channel multiplexers.

Fig. 5
Fig. 5

Ray diagrams at the end facet of the second-stage GRIN lens, circle represents the 50-μm core of the output fiber; (a) central channel, (b) outer channel.

Fig. 6
Fig. 6

Insertion loss vs. output/input fiber diameter ratio.

Fig. 7
Fig. 7

Ray diagrams for single-mode input fiber at the end facet of second-stage GRIN lens, circle represents 50-μm core of output fiber; (a) central channel, (b) outer channel.

Fig. 8
Fig. 8

Insertion loss vs. single-mode input fiber offset.

Fig. 9
Fig. 9

Spectral insertion loss for three-channel multiplexer.

Tables (1)

Tables Icon

Table I Measured Insertion Losses for Dual GRIN Lens Multiplexer

Equations (4)

Equations on this page are rendered with MathJax. Learn more.

X ( z ) = x 0 cos ( α z c ) + ξ c α sin ( α z c ) , Y ( z ) = y 0 cos ( α z c ) + η c α sin ( α z c ) ,
ξ = d X d z | z = 0 η = d Y d z | z = 0 , c = 1 α 2 ( x 0 2 + y 0 2 ) cos θ 0 ,
W k = exp [ ( k 5 ) 2 ln 10 ] .
          = sources l angles k n l k W k l k N l k W k .

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