Phase shift keying demodulator and four-phase phase shift keying demodulator

A phase-shift keying and demodulation technology, applied in modulation carrier systems, electromagnetic wave transmission systems, digital transmission systems, etc., can solve difficult problems and achieve the effects of reliable performance, simple structure and convenient use

Inactive Publication Date: 2012-02-15
诺方(哈尔滨)科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the DPSK demodulator used at this stage uses a temperature co

Method used

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  • Phase shift keying demodulator and four-phase phase shift keying demodulator

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0051] The present invention provides a phase shift keying demodulator, comprising a beam splitter and a reflector, the beam splitter and the reflector are fixed on the same plate, and also includes a phase delay device, the phase delay device is arranged on the plate, and Located on the optical path between the beam splitter and the reflector, it...

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Abstract

The invention discloses a phase shift keying demodulator and a four-phase phase shift keying demodulator, wherein the phase shift keying demodulator comprises a beam splitter and a reflector, the beam splitter and the reflector are fixed on the same flat plate; and the phase shift keying demodulator further comprises a phase delay device, wherein the phase delay device is arranged on the flat plate and located on an optical path between the beam splitter and the reflector, and the phase delay device is used for generating phase delay for one path of light split by the beam splitter. With the phase shift keying demodulator and the four-phase phase shift keying demodulator, two beams of optical signals can be controlled or tuned accurately; and the phase shift keying demodulator and the four-phase phase shift keying demodulator both are simple in structure and reliable in performance.

Description

technical field [0001] The invention relates to optical signal modulation and demodulation technology, in particular to a phase-shift keying demodulator and a quadrature phase-shift keying demodulator, belonging to the technical field of optical fiber communication. Background technique [0002] Phase Shift Keying (PSK for short) is a modulation technique that uses the carrier phase to represent the input signal information. The general digital modulation method uses limited and definite numbers to represent digital information, while PSK uses limited phase information in the signal to represent digital information. Each of these phase information represents a specific binary number. Generally, the amount of information represented by the phase signal is the same as the amount of binary digital information, and all specific phase signals composed of phase information form a signal wave. The demodulator is designed to restore these phase signals to show the original digital...

Claims

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Application Information

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IPC IPC(8): H04B10/158H04L27/233H04B10/556
Inventor 高丽玮秦伟
Owner 诺方(哈尔滨)科技股份有限公司
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