INQUIRY CARDS · NOT A STOCK LIST
wholesale mmf optical transceiver
These cards help a buyer start a brief for a wholesale mmf optical transceiver and for other multimode forms that share the same fiber plant. A card is an inquiry label. It does not mean a module is in a cage, and it does not name a distribution channel.
Inquiry options
Fiber Optic Equipment
No inquiry option matches that search or category.
How to read a multimode reply
A wholesale mmf optical transceiver quotation is comparable when both sides name the fiber designation, the modal bandwidth, and the connector on the installed trunk. OM3, OM4, and OM5 are not interchangeable labels. OM4 is commonly specified at a higher effective modal bandwidth than OM3 at 850 nm. OM5 adds a wideband discussion that matters when the module uses more than one wavelength window. Ask which designation the reach figure assumes.
Short-reach multimode optics are usually built around an 850 nm VCSEL. Write the wavelength tolerance and the encircled-flux launch condition if the supplier cites a standards test. A power number taken with a different launch can look acceptable and still fail the link the plant was built for. Request receiver sensitivity at the same wavelength, and ask whether the figure is optical modulation amplitude or average power.
Connector choice changes the loss stack. An LC duplex pair has two mating points per end. An MPO-12 trunk used by a parallel 100 Gbit/s module has more fibers and a polarity method, often method B in data-center trunks. Ask the supplier which polarity the module expects and whether a breakout to four LC duplex lanes is in scope. Insertion loss per mated pair should be copied from the cable plant, then added to fiber attenuation before the optical budget is called closed.
Distance classes in public Ethernet names are a checklist, not a site survey. Many 100GBASE-SR4 descriptions use about 70 m on OM3 and about 100 m on OM4. If the route is 85 m of OM3, the SR4 class may be the wrong row even when the cage fits. Record the measured or designed length, the number of patch-panel passes, and the maximum connector loss the designer allowed.
Diagnostics still matter on a short link. Ask for per-lane received power so a dirty MPO row can be separated from a weak transmitter. Temperature grade belongs in the same note: a commercial 0 °C to 70 °C case range is a different part from an industrial range when the cage sits in an unconditioned hut. Quote comparison lists the commercial fields to align, and the RFQ form is where the brief is sent.