Patent ID: 8428467

Claim:
A transmitting device, comprising: a first optical fiber including a core that is provided with at least one second-order Bragg grating structure and a cladding that surrounds said core, said second-order Bragg grating structure having a periodically varying refractive index that varies according to a first period and that defines a first effective refractive index, and permitting transmission, via radiation, of a signal with a wavelength that falls within a first predetermined wavelength range, which is determined according to a product of the first period and the first effective refractive index; a converting unit coupled to said first optical fiber, and configured to convert a data-carrying electrical signal into a first data-carrying optical signal having a wavelength that substantially falls within the first predetermined wavelength range, and to output the first data-carrying optical signal to one end of said core of said first optical fiber for subsequent wireless transmission of the first data-carrying optical signal via radiation through said second-order Bragg grating structure of said first optical fiber; and a light guide unit coupled to said first optical fiber, and configured to scatter the first data-carrying optical signal radiated by said second-order Bragg grating structure of said first optical fiber.