sfp-gi2lktd5dca JDS Uniphase Corporation, sfp-gi2lktd5dca Datasheet - Page 2

• Manufacturer Part Number: sfp-gi2lktd5dca
• Description: Sfp Optical Transceiver--oc-48 And Oc-12 For Up To 80-km Reach And Gigabit Ethernet For Up To 120-km Reach
• Manufacturer: JDS Uniphase Corporation

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Section 1
The JDSU RoHS-compliant Small Form factor Pluggable (SFP) Optical Trans-
ceiver is a fully duplex serial electric, serial optical device with both transmit and
receive functions contained in a single module that provides a high-speed serial
link at signaling rates from 100 Mbps to 3.1 Gbps. It is designed to be compliant
with Telcordia GR-253-CORE IR and ITU-T G.957 S-16 standards (PIN receiver
based) or Telcordia GR-253-CORE LR and ITU-T G.957 L-4 standards (APD re-
ceiver based) (SONET OC-12 / SDH STM-4), Telcordia GR-253-CORE LR and
ITU-T G.957 L-16 standards (APD receiver based) (SONET OC-48 / SDH STM-
16), IEEE 802.3-2005 for up to 80 km reach (PIN receiver based) or up to 120 km
reach (APD receiver based) (Gigabit Ethernet and 1G Fibre Channel) applications.
The JDSU SFP Optical Transceiver is compatible to Fast Ethernet, SONET OC-3
and OC-12, and SDH STM-1 and STM-4 applications. The transceiver is also fully
compliant with the Small Form Factor SFP Pluggable Module Multi-Source Agree-
ment INF-8074i Rev. 1.0. A block diagram of the JDSU SFP optical transceiver is
shown in Figure 1 below.
The JDSU SFP optical transceiver does not need Rate Select to operate at the desig-
nated line rate. It has several low-speed interface connections including a 2-wire serial
interface. These connections also include: transceiver presence (Mod_Def(0)), trans-
mitter fault (TX_FAULT), transmitter disable (TX_DIS), and receive loss (RX_LOS).
Transmitter
The transmitter path converts serial NRZ electrical data from line rate of 100 Mbps
to 3.1 Gbps to a standard compliant optical signal. The transmitter accepts a 100 Ω
differential 300 mV peak-to-peak to 1400 mV peak-to-peak CML electrical signal on
TD- and TD+ pins.
Inside the module, the differential signals pass through a laser driver which transforms
the small swing digital voltage to an output modulation that drives an uncooled DML
laser. The optical signal is engineered to meet the SONET / SDH, Ethernet and Fibre
Channel rates specifications. Closed-loop control of the transmitted laser power,
modulation swing and center wavelength over temperature and voltage variations
is provided. The laser is coupled to single-mode optical fiber through an industry
standard LC optical connector.
Receiver
The receiver converts incoming DC balanced serial NRZ optical data from line rate
of 100 Mbps to 3.1 Gbps into serial electrical data. Light is coupled to a PIN or
APD photodetector from single-mode optical fiber through an industry standard
LC optical connector. The electrical current from the PIN or APD photodetector is
converted to a voltage in a high-gain transimpedance amplifier.
The amplified signal is passed to a Post Amplifier. Loss of signal, and signal lock de-
tection is included in the receive circuitry that is reflected in the RX_LOS status pin.
The recovered data is output on the RD+ and RD- pins as a 100 Ω differential 600
mV to 1600 mV peak-to-peak CML signal. The output signal meets the SFP MSA
requirements.
SFP OPTICAL TRANSCEIVER—OC-48 AND OC-12 FOR UP TO
80-KM REACH AND GIGABIT ETHERNET FOR UP TO 120-KM REACH
Functional Description