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Proceedings Paper

Broadband optical directional full couplers based on Blackman function
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Paper Abstract

A mismatched optical coupler with waveguide weighted by the Blackman function is numerically investigated in the demand of short-length, C+L-band, low crosstalk, and process tolerance. Utilizing the full factorial design, the structure parameters of coupling waveguide are obtained by beam propagation method. In the condition of crosstalk of -33.5 dB, the mismatched optical coupler with proper selected waveguide structure parameters is found to have a coupling length of 2.80 mm in the transmission wavelength ranges of C+L-band (1.53~1.61 μm). Obviously, the selection and design of waveguide structure are very important to satisfy the qualities of a mismatched optical coupler for the demand of short-length, bandwidth, and low-crosstalk.

Paper Details

Date Published: 11 November 2008
PDF: 9 pages
Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 71342N (11 November 2008); doi: 10.1117/12.803417
Show Author Affiliations
Chi-Feng Chen, National Central Univ. (Taiwan)
Yun-Sheng Ku, National Central Univ. (Taiwan)

Published in SPIE Proceedings Vol. 7134:
Passive Components and Fiber-based Devices V
Ming-Jun Li; Ping Shum; Ian H. White; Xingkun Wu, Editor(s)

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