No you can't. You still need router for dialing back to the ISP. From router to switch is easy. just plug 1 LAN cable from one of the LAN port to the switch and you're good to go

you can, pinging Anime4000

Also see https://forum.lowyat.net/index.php?showtopic=4925452

You will need the ONU because the device is used to convert optical signals to eletrical signals. Else you will need an SFP GPON (basically a small form factor ONU) that can be put directly in an SFP cage.

Also you will need a router to dial PPPoE, however the router here is optional. You can dial directly from the ONU/SFP GPON if it has a dialing function or you can dial directly from your PC, however only you yourself can use the internet.

Need to check if that SFP + RJ switch has VLAN aware
Also, you need SFP ONU Stick (miniature ONT) Some SFP ONU works with TM-Unifi, TM-Maxis. Some are not... due to LAN Port Provisioning

Dogs1985

it's hard to find compatible SFP xPON ONU Stick with Unifi.

TM using very complex Provisioning that SFP Stick not understand and cannot bridged

There are 2 type:
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Type A:
1. Native Fiber ISP such as TM-Unifi/Allo/TIME (ISP own network)
2. Provisioning Method: Bridge or LAN 1

Type B:
1. ISP on Fiber wholesale such as TM-Maxis, TM-Celcom, TM-DiGi, TM-Viewqwest, Allo-Maxis, Allo-DiGi, etc...
2. Provisioning Method: LAN 2, LAN 3, LAN 4, non-bridge

SFP xPON ONU Stick Type A:
1. ODI DFP-34X-2C2 (ZTE SoC, Stock Firmware) thankyou confirmed work with TM-Unifi
2. ODI DFP-34X-2C2 (Realtek RTL9601C1 Soc, Realtek Stock Firmware)
3. TWC TWCGPON657 (Realtek RTL9601C1 Soc, C00R657V00Bxx Firmware)
4. VSOL V2801F (Realtek RTL9601C1 Soc, V2801F Firmware)

SFP xPON ONU Stick Type B (Universal):
3. TWC TWCGPON657 (Realtek RTL9601C1 Soc, V2801F Firmware)
4. VSOL V2801F (Realtek RTL9601C1 Soc, V2801F Firmware)

As you can see, only V2801F firmware work on any kind of fiber network, V2801F can override many OMCI Provisioning also can send FAKE OK to OLT, telling that provisioning was success

Many SFP xPON ONU Stick are Type A, since stick only have 1 physical LAN, thus LAN 1 provisioning work just fine.

Also, when you using SFP xPON ONU Stick you can set MTU Size to 2000 bytes, set LAN and VLAN to 1508 MTU, and finally PPPoE 1500 MTU
because GPON has fixed MTU Size which is 2000 bytes, use it to reduce fragmentation, Maxis Fiber support PPPoE 1500MTU, I have tested it using RB3011UiAS
ODI DFP-34X-2C2 (Realtek): https://www.aliexpress.com/item/4000086970977.html
TWC TWCGPON657 (Realtek): https://item.taobao.com/item.htm?spm=a1z09....id=597031866488
VSOL V2801F (Realtek): https://www.ebay.com/itm/274895161296 or https://www.ebay.com/itm/164272857050

Personally, I use VSOL V2801F and TWCGPON657, currently I use TWCGPON657 with V2801F firmware
nas0 is ATM Interface: https://home.regit.org/technical-articles/atm-bridging/

Fibre optic is just a medium of transfer which could do long distance with minimal attenuation compared to copper medium, the protocol standard is Ethernet for example.

If you have the cash and have special agreement with the ISP fibre optic can make it seems like you're directly at the datacentre hooking up a switch to one of their 100G enterprise routers switch ports.
Many years before copper couldn't realise this but with modern day fibre combined with Ethernet standards this became a dream come true thing.

We call this direct point to point active Ethernet using fibre optic medium instead of LAN cable where you can only hook up a short distance copper length from your computer to your home switch.
Fibre optic allows distance of upto 10-20km depending on laser class.

So what you need is a router switch with a port that receives fibre media convertor modules/sticks that is called cages. Get a router/switch with a SFP+ cage. It'll at least future proof it to 10Gbps.

In Malaysia we do not have successful active P2P Ethernet for home consumers yet as initial build out costs is too expensive and you need to have 2 pairs to serve pure duplex mode for real symmetrical speeds to your customers.
For corporations and big time companies which colocations and hook their company network directly to Metro Ethernet that's an entire different story.

What do you intend to do?

xPON is similar acronym xDSL, is a "family" of networking.
The "x" usual refer to multiple thing, it can be:
1. E PON
2. G PON
3. XG PON (10Gb PON)
4. XGS PON (Symmetrical 10Gb)

ATM is Asynchronous Transfer Mode, where Download and Upload speed not same, for GPON speed is like 2.4Gbps Download, 1.2Gbps Upload

the "nas0_0" is Network Interface for ATM device

Bridge also Network Interface (Virtual), bind 2 different Network Interface