Features
- Single fiber bi-directional data links with symmetric 1.25Gbps upstream and 1.25Gbps downstream
- Integrated with micro-optics WDM filter for dual wavelength Tx/Rx operation at 1490/1310nm
- 1490nm continuous-mode transmitter with DFB laser
- 1310nm burst-mode receiver with APD-TIA
- Optical isolator built in for extreme Return Loss tolerance
- Resetless burst-mode receiver design
- Support more than 24dB dynamic range
- 0 to 70℃ operating temperature (S-SL20) -40 to 75℃ operating temperature (S-SL20E)
- Spring-latch SFP (Small Form-factor Pluggable) package with SC receptacle optical interface.
- Detailed product information in EEPROM
- Digital diagnostic interface compliant with SFF-8472 Rev 9.4
- Single 3.3V power supply
- Maximum 1W total power dissipation
- LVPECL compatible data input/output interface
- LVTTL transmitter disable control
- LVTTL transmitter laser failure alarm
- LVTTL receiver Loss Of Signal(LOS) indication
- Low EMI and excellent ESD protection
- ClassⅠlaser safety standard IEC-60825 compliant
- RoHS compliance (S-SL20G and S-SL20EG)
Applications
- Gigabit Ethernet Passive Optical Networks (GE-PON) – OLT side
Standard
- Compliant with IEEE Std 802.3ah™ -2004
- Compliant with FCC 47 CFR Part 15, Class B
- Compliant with FDA 21 CFR 1040.10 and 1040.11, ClassⅠ
- Compliant with SFF-8074i Rev 1.0
- Compliant with SFF-8472 Rev 9.4
Description
FTM-9712S-SL20(E)(G) is Optical Line Terminal (OLT) compliant with IEEE 802.3ah™-2004 1000BASE-PX20 application.
The transceiver is the high performance module for 1.25Gbps data link in single fiber by using 1490nm continuous-mode transmitter and 1310nm burst-mode receiver. The transmitter section uses a multiple quantum well 1490nm DFB laser and is CassⅠlaser compliant product according to international safety standard IEC-60825. The receiver section uses an integrated 1310nm APD (Avalanche Photo Diode) and preamplifier mounted in an optical header and limiting post-amplifier IC. Unlike the conventional burst-mode receiver, the receiver does not require reset pulse to receive optical data packets with different optical power.
The optical output can be disabled by LVTTL logic high-level input of TX Disable. TX Fault is provided to indicate that degradation of the laser. Loss of Signal (LOS) output is provided to indicate the loss of an input optical signal of receiver.
Enhanced Digital Diagnostic Monitoring Interface (DDMI) compliant with SFF-8472 Rev 9.4 has been incorporated into the transceivers. It allows real time access to the transcevier operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage by reading a built-in memory with I2C interface. For further information, please refer to SFF-8472 Rev 9.4.

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