High-speed optical communication and various experiments may require a specific light emission timing. However, adjustment of a light emission timing is not as easy as adjustment of electrical passive devices.
This product enables highly precise and stable adjustment of the amount of delay for transmission paths, such as light transmission timing control.


– Low insertion loss and low insertion loss fluctuation
– High amount of delay: Max 400 psec 
– High resolution
– Manual operation and USB for external control capability


Brochure  PDF


Typical Specifications

Model RDL05C
Wavelength 1550nm or 1310nm
Insertion Loss < 1.5dB(including loss fluctuation)
Loss Fluctuation < 0.5dB
Return Los > 50dB
Amount of Delay Max 400psec
Resolution < 0.005psec
PDL < 0.1dB
Optical Fiber SMF or DSF or PMF
Optical Adapter SC・FCInter-Exchangeable Type Adapter



External Control USB
Power Source AC90 – 240V
Power Consumption < 30 [W]
Operating Temperature 10 – 45 [deg C]
Storage Temperature 0 – 60 [deg C]
Dimensions(W x H x D) 260 x 99 x 280 [mm]
Weight 5 [kg]