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Fiber-optic sensors, especially fiber Bragg grating (FBG) sensors are very attractive due to their numerous advantages over traditional sensors, such as light weight, high sensitivity, cost-effectiveness, immunity to electromagnetic interference, ease of multiplexing and so on. Therefore, fiber-optic sensors have been intensively studied during the last(More)
Xanthomonas citri subsp. citri (Xcc) is the causal agent of citrus canker, a quarantine disease worldwide. This disease is hard to be completely controlled by chemical sprays, and the selection of citrus genotypes resistant to the pathogen becomes one of the most important ways to control the disease. The limited genotypes that have been found up to now(More)
In this article, we have proposed and demonstrated two new approaches to implement microwave photonic filter with tunable multi-passband based on reflective fiber Mach-Zehnder interferometer and cascaded fiber Mach-Zehnder interferometers and dispersive medium. The proposed MPF has simple structure and is easy to implement, also the experimental results(More)
In this letter, a fiber-optic temperature sensor using an optoelectronic oscillator (OEO) has been proposed and experimentally demonstrated. Part of the fiber in the oscillator loop is taken as the sensing fiber. Since the free spectrum range of the OEO is determined by the length of the oscillator loop, and when the temperature of the sensing fiber is(More)
With the development of modern signal processing and computer network technology, it brings new challenges to remote health care structure. This paper discusses a prototype which realizes the functions of physiological signal collection and calculation, GPS global positioning, and data transmission through GPRS. The new type of portable multi-life-parameter(More)
We experimentally demonstrate an all-fiber optical parametric amplifier (OPA) for generating widely tunable 1.44–1.50 µm laser. The OPA is achieved by simultaneously injecting a continuous wave (CW) 1533.4 nm fiber laser and a tunable laser into a 2-km long highly nonlinear fiber (HNF). Idler wave of 1439.98 nm wavelength with low threshold of(More)
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