25G SFP28 Tunable DWDM 15km
Support 96channel DWDM Wavelength Selection: C-band λc Wavelength

Up to 25.78125Gb/s data links

Monolithically integrated full C-band tunable transmitter and APD receiver

50 GHz ITU channel spacing with integrated wavelength locker

Up to 15km on 9/125µm SMF

Smart Features: Self-Negotiation, Remote DDM, Remote WL Locking

Hot-pluggable SFP+ footprint

Duplex LC/UPC type pluggable optical interface

RoHS-10 compliant and lead-free

Support Digital Monitoring interface

Single +3.3V power supply

Compliant with SFF+MSA and SFF-8472, SFF-8431, SFF-8690 and G.698.1

Metal enclosure, for lower EMI

Meet ESD requirements, resist 8KV direct contact voltage

Case operating temperature Commercial: 0 ~ +70oC Extended: -20 ~ +85oC Industrial: -40 ~ +85oC

Applications

CPRI 9.8304Gb/s, 10.1376Gb/s, 24.33024Gb/s

Ethernet 10.3125Gb/s, 25.78125Gb/s

HTF 25G tunable transceiver is an integrated fiber optic transceiver that provides a high-speed serial link at signaling rates from 9.8304 Gb/s to 25.78125 Gb/s. The module complies with the Enhanced Small Form Factor Pluggable （SFP+）multisource agreement-MSA（SFF-8431） and

SFF-8432，SFF-8690，SFF-8472. It complies with the ITU-T G.698.1 standard with 100 GHz channel spacing for CPRI and Ethernet applications.

The transceiver integrates the receiver and transmitter path on one module. The transceiver contains a C-band-tunable integrated Mach-Zehnder (MZ) laser, enabling data transmission over single- mode fiber through an industry-standard LC connector. On the receiver side, the 25 G/bps data stream is recovered from a trans-impedance amplifier, and passed to an output driver. This module features a hot-pluggable electrical interface.

the transceiver provides a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, and received optical power and transceiver supply voltage. It also defines a sophisticated system of alarm and warning flags, which alerts end-users when particular operating parameters are outside of a factory set normal range.

The SFP+ MSA defines a 256-byte memory map in EEPROM that is accessible over a 2-wire serial interface at the 8bit address 1010000X (A0h). The digital diagnostic monitoring interface makes use of the 8bit address 1010001X (A2h), so the originally defined serial ID memory map remains unchanged.