Optical comb type wave separator with multiple optical fiber collimating device
A wave splitter and collimator technology, applied in the field of optical communication, can solve the problems of high cost and difficult production of Interleaver devices, and achieve the effect of simple structure
Inactive Publication Date: 2010-10-20
诺方(哈尔滨)科技股份有限公司
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[0005] The purpose of the present invention is to provide an optical comb demultiplexer with a multi-fiber collimator to introduce the multi-fiber collimator into the optical Realize low-cost, high-performance Interleaver devices in comb splitters
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[0048] First, briefly introduce the types and simple principles of the optical comb splitter (Interleaver). Now there are several ways to make Interleaver: ①Crystal Interleaver; ②Fabry-Perot (F-P) cavity Interleaver; ③All-fiber Mach-Zed MZ Interleaver; ④Polarizing Beam Splitter (PBS) + wave plate type Interleaver. The basic principles of these Interleavers are all the same. They all use the interference principle of light to select the appropriate frequency combination output by controlling the periodic signal wavelength generated by the interference and repeating the integer multiple output interference pattern. The output spectrum is similar to a comb. Equally spaced spectra in the shape of a wave. Among them, the basic optical path structure of the crystal-type Interleaver is as follows figure 2As shown, after the light is incident on the polarization splitting crystal 100 and the wave plate 200, it becomes polarized light and enters the birefringent crystal filter group...
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The invention relates to an optical comb wave separator provided with a multiple optical-fiber collimator, comprising an optical comb wave separator core and the collimator which is formed by at least two jumper cables of optical-fiber and is arranged at two ends of the optical comb wave separator core. The collimator formed by at least two jumper cables of optical-fiber can be the collimator formed by three jumper cables, four jumper cables and six jumper cables, etc. a plurality of optical fibers. Connecting certain optical fibers of the collimator formed by a plurality of jumper cables also can form a cascading optical comb wave separator. The optical comb wave separator provided with the collimator formed by a plurality of optical fibers of the invention can integrate a plurality of optical comb wave separator sets on the core of one optical comb wave separator and can realize the cascading for the optical comb wave separator so as to enhance the isolation degree and the capability of the optical comb wave separator and to reduce cost in virtue of the application of the multiple optical-fiber collimator.
Description
technical field [0001] The invention relates to the field of optical communication, in particular to an optical comb splitter with a multi-fiber collimator. Background technique [0002] The optical comb demultiplexer (Interleaver) is a cross-wavelength wavelength division multiplexer used in the field of optical fiber communication, which can make dense channel spacing sparse to achieve denser wavelength division multiplexing. as follows figure 1 As shown, using an optical comb demultiplexer, a signal with a frequency interval of v can be divided into two columns of signals with a frequency interval of 2v, which is an optical filtering technology that is output from two channels in an interleaved manner. Usually, two columns of signals with a frequency interval of 2v It is called the odd and even two groups of signals, and is output by the reflection end and the transmission end of the Interleaver. The general Interleaver can also realize the function of multiplexing, whi...
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IPC IPC(8): G02B6/26H04J14/02G02B6/34
Inventor 崔伟龙
Owner 诺方(哈尔滨)科技股份有限公司