10 October 2017 Waveguide-type optical circuits for recognition of optical 8QAM-coded label
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Abstract
Optical signal processing is expected to be applied in network nodes. In photonic routers, label recognition is one of the important functions. We have studied different kinds of label recognition methods so far for on–off keying, binary phase-shift keying, quadrature phase-shift keying, and 16 quadrature amplitude modulation-coded labels. We propose a method based on waveguide circuits to recognize an optical eight quadrature amplitude modulation (8QAM)-coded label by simple passive optical signal processing. The recognition of the proposed method is theoretically analyzed and numerically simulated by the finite difference beam propagation method. The noise tolerance is discussed, and bit-error rate against optical signal-to-noise ratio is evaluated. The scalability of the proposed method is also discussed theoretically for two-symbol length 8QAM-coded labels.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Tumendemberel Surenkhorol, Tumendemberel Surenkhorol, Hiroki Kishikawa, Hiroki Kishikawa, Nobuo Goto, Nobuo Goto, Khishigjargal Gonchigsumlaa, Khishigjargal Gonchigsumlaa, } "Waveguide-type optical circuits for recognition of optical 8QAM-coded label," Optical Engineering 56(10), 107101 (10 October 2017). https://doi.org/10.1117/1.OE.56.10.107101 . Submission: Received: 28 May 2017; Accepted: 19 September 2017
Received: 28 May 2017; Accepted: 19 September 2017; Published: 10 October 2017
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