Optical Transceiver Supplier in Japan
10G, 25G, and 100G modules, DAC and AOC cables — factory-direct, quoted from Tokyo within 1-2 business days.
ModuleSheep supplies optical transceivers in Japan, from 1G SFP up to 100G QSFP28, along with DAC cables, AOC cables, and fiber patch cords. We are the Japan sales channel for ModuleTek, an optical module maker with its own factories, operated by TWOSHEEP Co., Ltd. in Tokyo. Send an inquiry and get a quote within 1-2 business days — in Japanese, English, or Chinese.
Optics From 155M to 100G, Plus the Cabling Around Them
The catalog covers optical transceivers from 155M to 100G. That includes 1G SFP, 10G SFP+ SR, 25G SFP28 LR, and 100G QSFP28 SR4 modules, plus BiDi, CWDM and DWDM, XFP, and 16G/32G Fibre Channel parts. Around the transceivers, we supply the rest of the link: if you are sourcing DAC cables in Japan for short in-rack runs, AOC cables for longer spans, WDM mux/demux units, fiber patch cords including MTP/MPO trunks, copper RJ45 modules, or adapters, they come from the same catalog and the same quote. The full product list is on our products page; if a part is missing, ask in the inquiry form.
Made in ModuleTek's Own Factories, Inspected Unit by Unit
Every module comes from ModuleTek, an optical module manufacturer with its own factories in Shenzhen and Dongguan. Production runs on in-house SMT, COB, and optical sub-assembly lines. Each unit passes 100% AOI — automated optical inspection. Compatibility is verified in ModuleTek's vendor-compatibility test lab, so Cisco-compatible transceivers arrive coded for Cisco, and the same applies to Juniper, Arista, Mellanox, and other major vendors. Tell us your switch platform and we supply the correctly coded part.
A Japan-Based Supplier With a Tokyo Company Behind It
ModuleSheep is operated by TWOSHEEP Co., Ltd. (TWOSHEEP株式会社), a Tokyo company located in the Telecom Center Building in Aomi, Koto-ku. That makes us an optical module supplier in Japan in the full sense: a local counterparty, an invoice from a Japanese corporate entity, and support in Japanese, English, and Chinese. Pricing is quote-based and set by quantity and delivery schedule, so the number you get reflects your actual order rather than a one-size list price. TWOSHEEP also runs data center services — remote hands, IP transit, dedicated lines — so we understand how network and data center teams buy and deploy optics.
How Ordering Works
Send an inquiry through the form in Japanese, English, or Chinese. List the models or vendor part numbers, quantities, and when you need them. We reply with a quote within 1-2 business days. Once you confirm, delivery is arranged on the agreed schedule. You will notice there are no prices on the site. Transceiver pricing depends on quantity and delivery timing, so a fixed price list would rarely be the best number we can offer. A short inquiry gets you an accurate quote instead.
Frequently Asked Questions
Are the transceivers compatible with Cisco, Juniper, and Arista switches?
Yes. Modules are supplied coded for your platform — Cisco, Juniper, Arista, Mellanox, and other major vendors. ModuleTek verifies this in its own vendor-compatibility test lab. Include the switch model in your inquiry and we will confirm the right part number.
Why are there no prices on the site, and how do I get pricing?
Pricing is quote-based (見積) because it depends on quantity and delivery schedule. Send the part numbers and quantities through the inquiry form and you will receive a quote within 1-2 business days. The form works in Japanese, English, and Chinese.
We are a foreign company with operations in Japan. Can you support us in English?
Yes. The site and the inquiry process run in Japanese, English, and Chinese. You buy from TWOSHEEP Co., Ltd., a Tokyo company, and receive an invoice from a Japanese corporate entity — which keeps procurement and accounting simple for your Japan-based team.
Get a Quote Within 1-2 Business Days
Send the part numbers or vendor models, quantities, and your delivery timing through the inquiry form. Our Tokyo team replies with a quote within 1-2 business days — in Japanese, English, or Chinese.