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Optics Letters

Optics Letters


  • Vol. 6, Iss. 12 — Dec. 1, 1981
  • pp: 639–641

Planar Rowland spectrometer for fiber-optic wavelength demultiplexing

H. W. Yen, H. R. Friedrich, R. J. Morrison, and G. L. Tangonan  »View Author Affiliations

Optics Letters, Vol. 6, Issue 12, pp. 639-641 (1981)

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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

Original Manuscript: June 15, 1981
Published: December 1, 1981

H. W. Yen, H. R. Friedrich, R. J. Morrison, and G. L. Tangonan, "Planar Rowland spectrometer for fiber-optic wavelength demultiplexing," Opt. Lett. 6, 639-641 (1981)

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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.

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