100G-LR1 (DR/FR)

Tue Apr 4 15:42:30 UTC 2023

We are willing to do 100G-LR1 if someone asks these days.  It lets us be able to roll it up into 400G optics on our side as appropriate.  

The big difference in DR/FR is the receiver sensitivity, they are all compatible optically, so it’s really about the DR/FR being yield rejects for LR1.  It’s also less components in the LR1 vs 100G-LR4 since you don’t need 4 transmitters and 4 receivers and if one fails you toss the optic, so fewer components is also lower cost.

- Jared

> On Apr 2, 2023, at 8:14 PM, David Siegel <arizonagull at gmail.com> wrote:
> 
> At this point, I'd be happy to see others happily deploy a single-lambda optic of almost any variety!  Since deploying 400G in a clients network (but 100G still being the preferred connection choice), any inquiry with respect to LR1, FR1 or DR+ is met with "no thanks, LR4 please."
> 
> If asked, I'd recommend FR1.  They're available at a great price-point, and 2km reach is adequate for most applications.
> 
> On Fri, Mar 31, 2023 at 7:25 AM Jared Mauch <jared at puck.nether.net> wrote:
> The common tech is 100G-LR4 these days - I'm wondering how many operators are supporting the LR1 to allow its use on 400G and future 800G optics as those use breakout to support 100G ports. 
> 
> Would you rather do a 400G port on a router vs 100LR1?
> 
> Curious what others think. 
> 
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