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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21401–21414

Synthesis of a multichannel lattice-form optical delay-line circuit with ring waveguides

Shafiul Azam, Takashi Yasui, and Kaname Jinguji  »View Author Affiliations

Optics Express, Vol. 16, Issue 26, pp. 21401-21414 (2008)

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This paper presents a one-input M-output (1×M) circuit configuration and a synthesis algorithm for realizing an optical infinite impulse response (IIR) lattice filter having M- output channels (M ≥ 2). The circuit configuration has a multilayer structure consisting of multiple Mach–Zehnder interferometers with delay time difference of Δτ. It is a natural extension of the conventional two-port optical IIR lattice circuit (M = 2). Synthesis algorithm is derived to obtain all unknown circuit parameters. The proposed synthesis algorithm is based on factorizations of the paraunitary total transfer matrix. Simulation result demonstrates the effectiveness of the proposed multichannel IIR design scheme. The synthesis algorithm for M – channel IIR filter is considered lossless in this paper, which implies that the filter must be power complementary.

© 2008 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2310) Fiber optics and optical communications : Fiber optics
(060.4230) Fiber optics and optical communications : Multiplexing
(350.2460) Other areas of optics : Filters, interference

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: October 14, 2008
Revised Manuscript: November 24, 2008
Manuscript Accepted: November 24, 2008
Published: December 11, 2008

Shafiul Azam, Takashi Yasui, and Kaname Jinguji, "Synthesis of a multichannel lattice-form optical delay-line circuit with ring waveguides," Opt. Express 16, 21401-21414 (2008)

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