G.652/G.655 Dispersion compensation DCM/DCF

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Keywords: G.655 dispersion compensation fiber, G.652 dispersion compensation fiber, DCM dispersion compensation, DCF dispersion compensation

G.652 Definition of Optical fibers:

G.652 fiber, also known as standard single-mode fiber (SMF), refers to the dispersion zero (that is, the wavelength at which the dispersion is zero) of the fiber near 1310nm. The dispersion coefficient in the 1550nm window is positive. At wavelength 1550nm, the typical value of the dispersion coefficient D is 17ps/nm-km, and the maximum value is generally not more than 20ps/nm-km.

G.652 fiber has two transmission Windows of 1310nm and 1550nm, with small dispersion but large decay loss at 1310nm, and small decay loss but large dispersion at 1550nm

G.655 Definition of Optical fibers:

The G.655 fiber is an improved dispersion-shifted fiber, which shifts the zero dispersion point from 1310nm to 1550nm, so that the dispersion and attenuation of the 1550nm window are very low; The G.655 fiber's dispersion at 1550nm is close to (but not equal to) zero, making it suitable for transmission over longer distances and for larger capacity applications

Dispersion of optical fibers

Different frequencies or modes in the optical pulse have different speeds in the fiber, so these frequency components and modes arrive at the end of the fiber first and then, so that the light pulse is widened, which is the dispersion of the fiber.

Dispersion compensation

Dispersion compensation is a technique developed in optical fiber communication technology to compensate for the signal distortion caused by the dispersion of light in the optical fiber. In order to maintain signal quality and improve optical fiber communication efficiency, it is necessary to compensate optical signal dispersion.

Single-mode fibers have dispersion in the C-Band, which limits the transmission distance and available bandwidth of the 1550nm fiber system. Using dispersion compensation fiber module (DCF, DCM) is the simplest, most economical and most effective method. It can not only effectively compensate the excess dispersion of standard single-mode fiber, but also 100% compensate the dispersion slope of standard single-mode fiber.

At present, there are two dispersion compensation fibers for different fiber types: G.652 dispersion compensation fiber and G.655 dispersion compensation fiber

G.652 DCM dispersion compensation fiber module is based on negative dispersion compensation fiber technology, which can effectively compensate the dispersion characteristics and dispersion tilt characteristics of G.652 standard single-mode fiber in the transmission band of 1525 ~ 1565nm

G.655 DCF dispersion compensation fiber module is specially designed for G.655 single-mode fiber C-band, which can compensate the dispersion and dispersion slope of the wide band, optimize the residual dispersion of the system, and improve the performance of the optical transmission system.

Fiberwdm can provide dispersion compensation equipment based on G.652 and G.655 dispersion fiber, which has mature technology, stable performance parameters and low insertion loss, and has been widely used in long distance wavelength division transmission system.

General keywords:

Passive wave division: CWDM,DWDM, Wavelength division Equipment, Wavelength Division multiplexer, MUX/DEMUX, high speed, the TAWG/AAWG, flat-roofed type AWG, gaussian type AWG, 100 GHZ / 200 GHZ / 50 GHZ / 75 GHZ / 150 GHZ, 40, 48 ch / 96 ch/ch / 120 ch / 64 ch / 32 ch AWG, FWDM, LWDM,MWDM,LAN-WDM, SWDM, O-band WDM, CEx-WDM, Fiber Grating reflector, Fiber grating array waveguide, Rack-mounted passive wavelength division, interleaver Comb filter, mini wavelength division module, CCWDM, Ultra MINI WDM,RAMAN WDM, Raman WDM, GPON, EPON,XGS-PON, NG-PON,XG-PON, 50G PON, FTTR

Optical fiber transmission equipment: Wavelength division transmission, 200G/400G DCI, EDFA, SOA, RFA Raman amplifier, fiber long distance transmission, OLP, optical line protection, OBP, optical bypass protection, bypass device, power cut through, fiber active/standby route protection, semi-active wavelength division, PON remote, PON aggregation remote, Optical cable detection system, 5G stretch, optical fiber expansion, DCM dispersion compensation, data center interconnection DCI, bare fiber interconnection, VOA board, dimmable attenuator, OEO/OTU board, 40G business board, 100G business board

Optical splitter: FBG taper splitter, PLC optical splitter, wave splitter, TAP-PD, multi-mode splitter, multi-mode PLC

Optical switch: mechanical optical switch, MEMS optical switch, magneto-optical switch, optical routing equipment, optical crossover, optical switching, OXC optical matrix, optical switch switching equipment

Optical module: 1X9 optical module, SFP/SFP+/XFP optical module, QSFP+40G optical module, QSFP28 100G optical module, 200G optical module, 400G optical module, 800G optical module, QSFP-DD, QSFP56, QSFP112, OSFP, AI computing power optical module, SDI optical module, HD video optical module, single transmission and single receiving optical module, wave division optical module, CWDM optical module, DWDM optical module, industrial optical module, military optical module; 25G optical module, 40G optical module, Fiberchannel, 8G/16G/32G FC optical module, 12G SDI optical module, CFP to QSFP28 conversion module

High speed cable: DAC, AOC, ACC,AEC,Mini-SAS, HDMI AOC

Integrated cabling: optical jumper, MPO/MTP jumper, armored optical jumper, base station pull high beam jumper, field cable assembly, multi-core cable jumper, ODF fiber distribution frame, fiber connector box, 144 core high density fiber distribution frame, photoelectric composite cable

Optical devices: ring actuator, passive dual fiber to single fiber, passive single multimode conversion, optical isolator, polarization-preserving device, polarization-preserving coupler, polarization-preserving circulator, polarization-preserving jumper, polarization-preserving isolator, PBC/PBS beam binder/splitter, polarization-preserving CWDM, polarization-preserving DWDM

Network security: OTAP rack-mounted splitter, TAP shunt, aggregation shunt, traffic replication, spectral replication, one-way isolation, fiber optic network card

Access equipment: Optical transceiver, protocol converter, optical fiber transceiver, photoelectric converter, PCM equipment, telephone optical transceiver, PDH optical transceiver, video optical transceiver, industrial transceiver, Industrial switch, POE switch, POE transceiver