研究目的
To survey the integration techniques of free space optics (FSO) systems with optical fibers for last mile communication, discussing their working principles, advantages, disadvantages, and future research directions.
研究成果
The survey concludes that integrating FSO with optical fibers offers a viable solution for last mile communication, despite challenges like atmospheric disturbances. Future research directions are suggested to overcome these limitations.
研究不足
The paper highlights challenges such as attenuation, weather conditions, and scintillation affecting FSO systems, and the need for further research to mitigate these issues.
The paper reviews various techniques for integrating FSO with fiber optics, including different architectures (Mesh, Ring, Star), components (OLT, ONU, Remote Node), and modulation techniques (OOK, OFDM, PPM). It also discusses the challenges like atmospheric disturbances and solutions like dichroic mirrors and laser phased arrays.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
Erbium-doped fiber amplifier
EDFA
Amplifies the optical power of the laser
-
Phase modulator
Modulates the optical signal phase
-
VCSEL-based tunable optical bandpass filter
TOBPF
Converts phase to intensity modulated signal
-
Photo-diode
PD
Detects the optical signal
-
Low noise amplifier
LNA
Amplifies the signal with low noise
-
Bit error rate tester
BERT
Measures the bit error rate of the data stream
-
Optical interleaver
Processes the optical signal for up-link
-
Variable optical attenuator
Refines the optical signal
-
Single mode fiber
Transmits the optical signal over long distances
-
Dichroic mirror
Finds an alternate route for the laser ray to reach its destination
-
Fiber laser phased array
FLPA
Transmits the quadrature phase shift keying signal
-
Collimator
Merges the signal into the optical fiber
-
Homodyne detector
Observes the light signal at the receiver end
-
Analog to digital converter
Changes the signal for digital signal processing
-
Digital signal processor
DSP
Manages the signal for phase estimation
-
Cassegrain system
Simulates the optical transmission process
-
登录查看剩余14件设备及参数对照表
查看全部
