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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 24, Iss. 4 — Apr. 1, 2006
  • pp: 1865–

Reflection Properties of Coupled-Ring Reflectors

Youngchul Chung, Doo-Gun Kim, and Nadir Dagli

Journal of Lightwave Technology, Vol. 24, Issue 4, pp. 1865- (2006)


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Abstract

The reflection properties of a coupled-ring reflector (CRR) are analyzed using the transfer matrix method. The CRR is composed of two coupled rings that are coupled to a bus waveguide. Depending on the combination of the cross-coupling ratios of the couplers, the reflection spectrum shape changes greatly. In the lossless case, the reflection spectrum has four peaks when the ring-bus coupling ratio is small. When the ring-bus coupling ratio is more than half and the ring-ring coupling is very small, the four peaks broaden, forming a single peak with still considerably narrow reflection spectrum, which makes the CRR attractive in applications requiring compact reflectors such as for single-mode laser diodes. The dependence of the propagation and insertion losses of the couplers on the reflection spectrum is also investigated, and the design guidelines are presented.

© 2006 IEEE

Citation
Youngchul Chung, Doo-Gun Kim, and Nadir Dagli, "Reflection Properties of Coupled-Ring Reflectors," J. Lightwave Technol. 24, 1865- (2006)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-24-4-1865

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