An interconnection method for transmissive stars is presented that permits the fabrication of arbitrarily large stars from elementary ones. Being free from multiple-path interference, this synthesis is particularly well suited for single-mode stars. The method can be implemented with any of a number of techniques; in particular, the use of recently developed high-quality 3-dB couplers should result in the synthesis of large single-mode stars with negligible excess loss.
© 1984 Optical Society of America
M. E. Marhic, "Hierarchic and combinatorial star couplers," Opt. Lett. 9, 368-370 (1984)