1620nm Fiber SC APC Optical Reflector

1620nm Fiber SC APC Optical Reflector

Item Overviews

1650nm fiber grating optical filter is the important components in the field of Optical communications link to detect. The principle is equivalent to a band-pass filter, which completely reflects light from 1625nm to 1656.5nm back (the return ratio is over 99.5%) and all other wavelengths of light pass through. Used in the field of communication can be separated communication light (C + L band) and detection of light, to prevent the detection of light through to the communication signal impaction, and can detect the return light at the control. All aspects of fiber grating indicators are stronger than the coating method. Fiber optic reflectors, also known as fiber grating termination filters. When the optical measurement system sends the light wave of a certain frequency range to the fiber grating line termination filter at the end of the fiber through the front end of the optical fiber,
the fiber grating reflects the inherent reflection wavelength (1650 nm±5 nm or 1625 nm± 5 nm) of the grating, and the measurement system The detection of this wavelength proves that the optical fiber connection is normal and no damage or breakage of the optical fiber occurs. However, other communication wavelengths are not reflected on the inherent wavelength of the fiber grating and will pass normally without affecting normal communication. The fiber grating termination filter can be conveniently placed in series at the end of the user, as long as the optical measurement system is connected to the front end of the optical fiber splitter. When the presence of the center wavelength is detected, the fiber connection at the customer end is normal, if the center wavelength does not exist or The decrease in reflectance indicates that the customer fiber is damaged or broken and needs maintenance. Currently, in the FTTH project, SC-type and TF attenuator-type are widely used. When the SC-type structure is applied, one end needs to be connected in the field, and the TF attenuator-type ends are directly connected.

Product Function

√ Pass 1310+1550 nm and Stop 1650nm
√ RoHS compliance
√ Grating embedded in the fiber, free from environmental pollution
√ High reliability, long life expectancy
√ Reflectance is high for bands that need to be blocked (above 99.5%), close to total reflection
√ The wavelength of the reflection band is controlled accurately (1625nm ~ 1656.5nm) In the
bandpass edge of the transition zone is very narrow (less than 2nm), this area is all-pass
√ Using the standard common adapter structure, easy connection

Optical Specification
 
Note:
(1) ORL(dB) = -10 log 10(Reflected Power/ Input Power) [dB];
(2) IL(dB) = -10 log 10(Output Power/ Input Power) [dB];
(3) To measure the Return Loss of reflect band, the light of 1650nm should be injected from the female
side of reflector.

Operating Temperature / Moisture / Storage