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THE FUTURE www.lightwavelink.com.tw
LlGHTWAVE LlNK INC. Optical Line Protection Module Product Description Lightwave Link Inc OLPM (Optical Line Protection Module) is combined with optical
switch, optical splitter and optical power monitoring function. The OLPM is consisted of one 1x2 optical
switch, one 1x2 optical splitter and PD monitoring. The subsidiary electrical circuitries are for driving optical
switch, performing PD monitoring and demarcating PD linear range with I2C interface. The main function of OLPM are splitting optical signals, selecting optical light path and monitoring the optical power. Lightwave Link Inc OLPM complies with TELCORDIA GR-1312-CORE.
Applications * Split the input light source to two paths by 1x2 splitter (IN->TXA/TXB). Monitoring the optical powers from RXA/RXB and feedback to management system via I2C interface. Management system will control the optical
switch via subsidiary circuitries to obtain the optical light path selecting function.
Product Function * Input port (IN) light signal output to TXA and TXB via 50/50 splitter. * Light signal is from RXA to Tap1, 2.5% for optical power monitoring and 97.5% for transmission to 1x2 optical
switch. Light signal is from RXB to Tap2, 2.5% for optical power monitoring and 97.5% for transmission to 1x2 optical
switch. Output port (OUT) will output the light signal from RXA and RXB via selected optical path by 1x2 optical
switch. The PD monitor results (analog signals) will convert to digital signals by AD convertor and output to management system via I2C interface. * There are optical
switch driving circuitry inside and control the optical
switch's status via electrical pin and timing signals. * There is EEPROM with I2C interface to keep two demarcated PDs' linear ranges. There is online function inside for status judgment from management system. * There are 40 optical power data in EEPROM, the optical power of AD monitoring will compare with EEPROM and find the optical power range then upload to management system. Optical Line Protection Module
