10384 [ ] 9724002 UDC 155Mb/s (Wang Zengbo) 2001 5 2001 2001 2001 5
.1 Abstract.2.3 1.1 3 1.2.5 1.3.9 11 2.1.11 2.2 14 2.3.17.26 3.1.26 3.2 LD 26 3.3 MAX3263 31 3.4 PCB.37 45 4.1.46 4.2.46 4.3 50 4.4.55 4.5 MC2045.56 PCB 64 5.1 PCB.64 5.2 PROTEL PCB 67 5.3 155Mb/s.68.73 6.1 73 6.2.74 6.3 76 6.4.78
(2000 ) 155Mb/s ( ) ( ) PCB PROTEL PCB MaximMAX3263 ( Maxim http://www.maxim-ic.com.cn) (http://www.mcosm-ic.com) Microcosm MC2045 YD/T986-1998 155Mb/s SDH SDH 155Mb/s STM-1 155Mb/s PCB
Abstract Fiberoptic transceiver module is used very widely in modern fiber optic communication system since it is the core device. Our research project was supported by FuJian Hi-tech research fund committee(from year 2000). The paper details the design and fabrication processes of 155Mb/s fiberoptic transceiver module, covering prospective market analysis design principle of fiber optic communication system optic transmitter driver circuit(transmittal section of the module) optic receiver circuit( receiving section of the module) PCB design and implementation module performance testing result and some realted topices. In order to achieve good performance with low cost of the module, we use CAD software PROTEL to optimize PCB design in quadrilayer structure. It significantly improve the antijamming property of this high-frequency module and thus reduce the influence factor of BER when it was using in a fiber optic communication system. The module consists of optic trasmitter circuit and optic receiver circuit. They are two independent circuit section from each other. It well meets the bi-directional transmission requirment of modern data communication system. MAX3264 IC from Maxim Corporation (Look for details at Maxim s technology website at http://www.maxim-ic.com.cn) is choiced for optic transmitter design, while MC2045 IC from Microcosm Corporation ( http://www.mcosm-ic.com ) is used in optic receiver design. The module complies with YD/T986-1998 standard established by China MII( Ministry of Information Industry). It can be used widely in the design of various kinds of optic communication devices, for example: optic access network devices in SDH system SDH 155Mb/s STM-1 MAN backbone transmission device in modern telecommunication network low than 155Mb/s optic communication devices and ethernet devices(such as optic NIC and optic switcher). The module features its high performa nce-cost ratio and is well suit for a small enterprise to take volume-produce. Key word: Transceiver module, Fiber optic communication system, Optic transmitter and receiver circuit, PCB design
1.1,, 19 20 B L BL 6 80 100(Mb/s).km, 50 1960 1966 K.C.Kao G.A.Hockham [1,2] 1000dB/km 1970 20dB/km GaAs 1970
1970 0.85µm 1984 50~100Mb/s 10km 1.3µm 80 1.3µm 1984 50km 1.7Gb/s 1.55µm 1.55µm G.653 1990 100km 2.4Gb/s 2.5Gb/s 4500km 10Gb/s 1500km DWDM DWDM (G.655 ) 2.5Gb/s 14000km 10 14 Hz~10 15 Hz 0.2dB/km
1.2 PSTN PSTN 4KHz 9.6kbit/s 56kbit/s PSTN 10% TCP/IP (Internet) 40% (CATV) CATV VOD CATV
Internet CATV CATV CATV ATM (IP Over ATM/ATM Over SDH) IP PC QOS OSI ( 1-2 ) SDH/SONET SONET Bell (Bellcore)
SDH ITU-T SONET FDDI DQDS ATM SDH/SONET FDDI/OVER SDH DQDS/OVER SDH ATM/OVER SDH SDH/SONET SDH/SONET SDH/SONET PCM 24 32 30 (2 D-Channel PSTN - NO.7) PDH T1 E1 PDH SONET SDH PDH SDH 1 (STS-1) SONET 1(OC-1) OC-1 51.84Mbit/s T1 E1 PDH SDH 1.1 1.2 SONET SDH [3] 1.1 (Transmission Standard of Digital TDM System) (Level) (Sessions) (American) /(Mbit/s) (Europe) (Japan) 0 1 0.064 0.064 0.064 1 24 30 48 2 96 120 3 480 1.544 3.152 6.312 2.048 8.448 480 34.368 1.544 3.152 6.312 32.064
672 1344 1440 4 1920 4032 5760 44.736 91.053 274.176 139.264 5 7680 565.148 (Mbit/s) (Transmission Rate) 97.728 397.200 1.2 SONET SDH (Coincidence Relation Between SONET and SDH ) SONET (SONET Definition) 51.840 OC-1 SDH (SDH Definition) 155.520 OC-3 STM-1 466.560 OC-9 622.080 OC-12 STM-4 933.120 OC-18 1244.160 OC-24 STM-8 1866.240 OC-36 STM-12 2488.320 OC-48 STM-16 SDH SONET SDH 155.52Mbit/s 1 (STM-1) SONET OC-3 (, ) ( ) ( SDH, ) ( ) (, ) PC CPN / / CPN PC 1-1 SDH Fig 1-1 SDH Transmission System of Modern Telecommunication Network
SDH ( 1-1 ) SDH ( ) DWDM 8 2.5Gb/s SDH Over DWDM G.655( ) 20Gb/s : Lucent Simens ( 1-1) SDH 155Mb/s 155Mb/s 155Mb/s MODEM( 56kb/s), ISDN( 112kb/s) ADSL( 8Mb/s) 155Mb/s 1.3 b) ST/ SC ST/ SC a) OSI/ISO c) 1-2 Fig 1-2 Modular Design Logic of FiberOptic Devices
OSI(Open System Interconnection) OSI ISO 1987 1-2 a) OSI OSI ( 1-2 ) ( ) 1-2 b,c) PCB / 155Mb/s 155Mb/s ( ) YD/T986-1998 155Mb/s
2.1 2.1.1 2-1 L L B BL BL 2-1 Fig 2-1 Typical Point-to-Point Fiber Optic Communication System
2.1.2 ( ) CATV BISDN <50km BISDN 10Gb/s 2-2 a) b) 2-2 Fig 2-2 Two structures of Fiber Distributed Network
CATV HDTV 2.1.3 LAN <10km LAN / LAN LAN 2-2 b) LAN 2-3 / LAN
FDDI FDDI 100Mb/s 1.3µm LED LAN N 1 N-1 2 2-3 Fig 2-3 Ring and Star Topology of Fiber Optic LAN 2.2 [4] 3 4 N 1 N-1 a) b) 2 3 4 0.85µm 1.31µm 1.55µm
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