Loopback series includes, 10G SFP Loopback, 40G QSFP Loopback, 25G SFP28 Loopback, 100G QSFP28 Loopback and 400G QSFP-DD Loopback.

Loopback Transceivers are cost effective and high quality solutions to test transceivers ports.

Loopback are compatible with both copper and optical SFP / QSFP / SFP28 / QSFP28 / QSFP-DD enabled ports, they perfectly replicate the performance range of typical of a 10G SFP, 40G QSFP, 25G SFP28, 100G QSFP28 and 400G QSFP-DD connection between equipped adapter cards, blade servers, routers, and switches.

Optech also provides Fiber loopback.

10G SFP+ Loopback

Part NumberModel No.PictureMedia TypeAttenuation
(dBm)
Temp.(℃)NoteDatasheet
OPSFPP-T-00-PxLoopbackCopper00~80Passive
OPSFPP-T-05-PxLoopbackCopper50~80Passive

25G SFP28 Loopback

Part NumberModel No.PictureMedia TypeAttenuation
(dBm)
Temp.(℃)NoteDatasheet
OPSF28-T-00-PXLoopbackCopper00 ~ 80Passive
OPSF28-T-05-PXLoopbackCopper50 ~ 80Passive

40G QSFP+ Loopback

Part NumberModel No.PictureMedia TypeAttenuation
(dBm)
Temp.(℃)NoteDatasheet
OPQSFP-T-00-PXLoopbackCopper00 ~ 70Passive
OPQSFP-T-05-PXLoopbackCopper50 ~ 70Passive

100G QSFP28 Loopback

Part NumberModel No.PictureMedia TypeAttenuation
(dBm)
Temp.(℃)NoteDatasheet
OPQS28-T-00-PXLoopbackCopper00 ~ 80Passive
OPQS28-T-05-PXLoopbackCopper50 ~ 80Passive

400G QSFP-DD Loopback

Part NumberModel No.PictureMedia TypePower
Consumption(W)
Temp.(℃)NoteDatasheet
OPQSDD-T-00-PXLLoopbackCopper00~115Passive
OPQSDD-T-00-PJELoopbackCopper100~115Passive
OPQSDD-T-00-PxELoopbackCopperPromrammable
0~15
0~115Passive
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