Abstract

A planar Rowland spectrometer was fabricated and characterized as a wavelength demultiplexer for multimode fiber-optic applications. The spectrometer consisted of a planar multimode glass waveguide with two curved end faces and a cylindrical concave grating attached to one of the end faces. Semiconductor lasers with wavelengths between 0.825 and 0.845 μm were used for the measurements. Cross-talk isolation between two adjacent fibers with center-to-center separation of 175 μm (100 Å in wavelength difference) was measured to be 18 dB. The device's performance was limited by grating diffraction efficiency, optical aberration, waveguide dispersion, and waveguide losses.

© 1981 Optical Society of America

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References

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  1. M. Born, E. Wolf, Principles of Optics, 5th ed. (Pergamon, NewYork,1975), p. 412.
  2. G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.
  3. G. W. Stroke, in Encyclopedia of Physics, Vol. XXIX, Optical Instruments (Springer-Verlag, Berlin, 1967), pp. 474–480.

Asawa, C. K.

G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.

Born, M.

M. Born, E. Wolf, Principles of Optics, 5th ed. (Pergamon, NewYork,1975), p. 412.

Freidrich, H. R.

G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.

Gorre, L. E.

G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.

Persechini, D. L.

G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.

Ramer, O. G.

G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.

Stroke, G. W.

G. W. Stroke, in Encyclopedia of Physics, Vol. XXIX, Optical Instruments (Springer-Verlag, Berlin, 1967), pp. 474–480.

Tangonan, G. L.

G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.

Wolf, E.

M. Born, E. Wolf, Principles of Optics, 5th ed. (Pergamon, NewYork,1975), p. 412.

Other (3)

M. Born, E. Wolf, Principles of Optics, 5th ed. (Pergamon, NewYork,1975), p. 412.

G. L. Tangonan, O. G. Ramer, H. R. Freidrich, C. K. Asawa, D. L. Persechini, L. E. Gorre, presented at Fifth European Conference on Optical Communications, Amsterdam, The Netherlands, September 1979.

G. W. Stroke, in Encyclopedia of Physics, Vol. XXIX, Optical Instruments (Springer-Verlag, Berlin, 1967), pp. 474–480.

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Figures (4)

Fig. 1
Fig. 1

Schematic of planar Rowland spectrometer.

Fig. 2
Fig. 2

Intensity profile at the output face with 55-μm-core input-fiber excitation: (a) using He–Ne laser, λ = 6328 Å; (b) using semiconductor laser, λ = 8255 Å.

Fig. 3
Fig. 3

Experimental arrangement for demultiplexer characterization.

Fig. 4
Fig. 4

Demultiplexer output as a function of output-fiber position. The solid curves were taken with both lasers on simultaneously; the broken curves were taken with one laser on at a time, (a) The two peaks correspond to λ = 8255 Å and λ = 8455 Å. (b) The two peaks correspond to λ = 8312 Å and λ = 8410 Å.

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