HNK fiber optic attenuator is a passive device used to reduce the amplitude of a light signal without significantly changing the wave form itself. This is often a requirement in Dense Wave Division Multiplexing(DWDM) and Erbium Doped Fiber Amplifier(EDFA) applications where the receiver cannot accept the signal generated from a high-power light source.
HNK attenuator feature a proprietary type of metal-ion doped fiber which reduces the light signal as it passes through. This method of attenuation allows for higher performance than fiber splices or fiber offsets or fiber clearance, which function by misdirecting rather than absorbing the light signal. HNK attenuator are capable of performing in the 1310nm and 1550nm.
HNK attenuator are capable of withstanding over 1W of high power light exposure for extended periods of time, making them well-suited to EDFA and other high-power applications. Low Polarization Dependent Loss(PDL) and a stable and independent wavelength distribution makes them ideal for DWDM.

Feature:
. Simple and Reliable Structure
. Durability ( well over 1W ) ( EDFA )
. Wavelength Independent ( DWDM )
. Low PDL ( ≤ 0.1dB )
. Low Polarization dependence
. RoHS compliant.

Application:
. Telecommunication networks
. CATV & LAN
. Date networks
. Passive Optical Networks

Specification:
ITEM Specifications
Wavelength 1310nm and 1550nm
Attenuation Tolerance (dB) 1-10dB≤ ± 1.0dB (typical) standard
11-15dB≤ ± 5% (typical) standard
1-10dB≤ ± 1.0dB (typical) premium
11-15dB≤ ± 5% (typical) premium
Return Loss ≥ 50dB (UPC)
PDL ≤ 0.1dB
Operating Temperature -40 ~ +85° C
Storage Temperature -40~+85° C