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Antisymmetric taper of distributed feedback lasers
Abstract
In a distributed feedback (DFB) laser with spatial index modulation, an antisymmetric taper of the feedback parameter,k, removes the threshold degeneracy, which is characteristic of uniform structures, and leads to one mode of particularly low threshold. Exact solutions are presented for the special case of an antisymmetric step ofk. An approximate perturbation method is developed which gives simple expressions for the threshold gains, and externalQ's of some tapered distributed feedback structures. The method is tested against two exact solutions, the uniform, and the stepped-kDFB laser. It is shown that the threshold of the stepped-kDFB laser is the lowest of any structure with an antisymmetric taper and a prescribed maximum value of|k|.
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Citations
Cited by
Haus, H. A., & Huang, W. (1991) · Proceedings of the IEEE · doi:10.1109/5.104225 · Cited by 992
Self-citationAlternative scheme for studying gap solitons in an infinite periodic Kerr medium
Feng, J. (1993) · Optics Letters · doi:10.1364/ol.18.001302 · Cited by 66
Metadata
- Authors
- Haus, H., & Shank, C.
- Venue
- IEEE Journal of Quantum Electronics
- Published
- 1976-09
- Volume
- 12
- Issue
- 9
- Pages
- 532-539
- ISSN
- 0018-9197 (ISSN-L)
- 1558-1713
- OpenAlex
- W2096133586
- Cited by
- 293
- References
- 0
- FWCI
- 1.42
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Antisymmetric taper of distributed feedback lasers. https://app.cochat.ai/papers/10.1109/jqe.1976.1069214
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- Haus, H., & Shank, C. (1976). Antisymmetric taper of distributed feedback lasers. IEEE Journal of Quantum Electronics. https://doi.org/10.1109/jqe.1976.1069214
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
