Manufacture & Export of OPTICAL MEASUREMENT, OPTICAL LIGHT SOURCE, OPTICAL POWER METER(OPM), EDFA(Eribium Doped Fiber Amplifier), OPTICAL LINE MONITORING SYSTEM, OPTICAL LINE AUTOMATIC SWITCH, OPTICAL ATTENUATOR, OPTICAL PATCH CORD, ID OJC(OPTICAL JUMPER CORD), OPTICAL COUPLER, Wideband WDM Coupler,Unified Wideband WDM Coupler, High Isolation WDM COUPLER