Use of direct-modulated/gain-switched optical links in monopulse-type active phased array systems
| Autor: | Siou Teck Chew, Dennis T. K. Tong, Tatsuo Itoh, Ming C. Wu |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Distributed feedback laser
Radiation Optical fiber Materials science Phased-array optics business.industry Phased array Physics::Optics Condensed Matter Physics Signal law.invention Monopulse radar law Optoelectronics Active antenna Radio frequency Electrical and Electronic Engineering business Computer Science::Information Theory |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 44:326-330 |
| ISSN: | 0018-9480 |
| DOI: | 10.1109/22.481583 |
| Popis: | With the advance of high speed laser technology, optical interaction with microwave circuits has become highly viable. Such interaction is advantageous as the fiber is low-loss, lightweight, and immune to electromagnetic interference. In this paper, interaction of direct-modulated and gain-switched optical links with active antenna phased array systems is demonstrated. In the direct-modulated optical system, the RF signal directly modulates the DFB laser. In the gain-switched optical system, the laser is gain-switched to function as a RF frequency doubler. The modulated signal is transmitted via an optical fiber and recovered at the receiving end by a high-speed photodetector. The recovered RF is then injected into the active antenna phased array systems as an injection-locking reference signal. Two active antenna systems are used for this demonstration: beam-switching and Doppler transceiver. |
| Databáze: | OpenAIRE |
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