| Autor: |
MJ Michael Wale, Alwyn J. Seeds, Colin Edge, U. Gliese, M.D. Elkin, Xuan Huang, L.N. Langley |
| Rok vydání: |
1999 |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Microwave Theory and Techniques. 47:1257-1264 |
| ISSN: |
0018-9480 |
| Popis: |
In this paper, we present the first fully packaged semiconductor laser optical phase-locked loop (OPLL) microwave photonic transmitter. The transmitter is based on semiconductor lasers that are directly phase locked without the use of any other phase noise-reduction mechanisms. In this transmitter, the lasers have a free-running summed linewidth of 6 MHz and the OPLL has a feedback bandwidth of 70 MHz. A state-of-the-art performance is obtained, with a total phase-error variance of 0.05 rad/sup 2/ (1-GHz bandwidth) and a carrier phase-error variance of 7/spl times/10/sup -4/ rad/sup 2/ in a 15-MHz bandwidth. Carriers are generated in the range of 7-14 GHz. The OPLL transmitter has been fully packaged for practical use in field trials. This is the first time this type of transmitter has been fabricated in a packaged state which is a significant advance on the route to practical application. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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