Polarization independent microphotonic circuits
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2006
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| Online Access: | http://hdl.handle.net/1721.1/33929 |
| _version_ | 1826196625758879744 |
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| author | Watts, Michael Robert, 1974- |
| author2 | Erich P. Ippen. |
| author_facet | Erich P. Ippen. Watts, Michael Robert, 1974- |
| author_sort | Watts, Michael Robert, 1974- |
| collection | MIT |
| description | Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005. |
| first_indexed | 2024-09-23T10:30:38Z |
| format | Thesis |
| id | mit-1721.1/33929 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:30:38Z |
| publishDate | 2006 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/339292019-04-12T09:21:04Z Polarization independent microphotonic circuits Watts, Michael Robert, 1974- Erich P. Ippen. Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. Electrical Engineering and Computer Science. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005. Includes bibliographical references (p. 165-170). Microphotonic circuits have been proposed for applications ranging from optical switching and routing to optical logic circuits. However many applications require microphotonic circuits to be polarization independent, a requirement that is difficult to achieve with the high index contrast waveguides needed to form microphotonic devices. Chief among these microphotonic circuits is the optical add/drop multiplexer which requires polarization independence to mate to the standard single-mode fiber forming today's optical networks. Herein, we present the results of an effort to circumvent the polarization dependence of a microphotonic add/drop multiplexer with an integrated polarization diversity scheme. Rather than attempt to overcome the polarization dependence of the microphotonic devices in the circuit directly, the arbitrary polarization emanating from the fiber is split into orthogonal components, one of which is rotated to enable a single on-chip polarization. The outputs are passed through identical sets of devices and recombined at the output through the reverse process. (cont.) While at the time of this publication the full polarization diversity scheme has yet to be implemented, the sub-components have demonstrated best-in-class performance, leaving integration as the remaining task. We present the results of a significant effort to design integrated polarization rotators, splitters, and splitter-rotators needed to implement the integrated polarization diversity scheme. Rigorous electromagnetic simulations were used to design these devices along with the microring-resonator based filters used to form the optical add/drop multiplexer microphotonic circuit. These device designs were passed onto fabrication, and the fabricated devices were characterized and the results compared to theoretical predictions. The integrated polarization rotators and splitters demonstrated broadband, low loss, and low cross-talk performance while the integrated polarization splitter-rotators demonstrated equally impressive performance and represent the first demonstrations of a device of this kind. Similarly impressive performance was exhibited by the microring-resonator filters which achieved the deepest through port extinction and largest free-spectral-range of a functioning high order microring-resonator filter. by Michael Robert Watts. Ph.D. 2006-08-25T18:57:39Z 2006-08-25T18:57:39Z 2005 2005 Thesis http://hdl.handle.net/1721.1/33929 67299320 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 170 p. 8993089 bytes 9000276 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Electrical Engineering and Computer Science. Watts, Michael Robert, 1974- Polarization independent microphotonic circuits |
| title | Polarization independent microphotonic circuits |
| title_full | Polarization independent microphotonic circuits |
| title_fullStr | Polarization independent microphotonic circuits |
| title_full_unstemmed | Polarization independent microphotonic circuits |
| title_short | Polarization independent microphotonic circuits |
| title_sort | polarization independent microphotonic circuits |
| topic | Electrical Engineering and Computer Science. |
| url | http://hdl.handle.net/1721.1/33929 |
| work_keys_str_mv | AT wattsmichaelrobert1974 polarizationindependentmicrophotoniccircuits |