Transmit Optical Subassembly
AssemblyA laser driver and transmitter IC modulating data onto a distributed-feedback (DFB) or Fabry-Perot laser, with isolators and attenuators for controlled output. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Transmit Optical Subassembly parts and their functions
8 top-level parts · 47 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | DFB Laser | 1× | DFB laser diode at 1310 or 1550 nm |
| 2 | Laser Driver | 1× | Modulation driver with TEC control |
| 3 | Thermoelectric Cooler | 1× | Thermoelectric cooler for wavelength tuning |
| 4 | Monitor Photodiode | 1× | Back-facet photodiode for power monitoring |
| 5 | Optical Isolator | 1× | Faraday optical isolator preventing back-reflection |
| 6 | Attenuator | 1× | Optical attenuator pad for level control |
| 7 | TOSA Board | 1× | TOSA substrate board |
| 8 | SMD Passive (R/C/L) | 40× | Biasing and supply decoupling |
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Bill of materials for Transmit Optical Subassembly
8 top-level lines · 8 rows shown · 47 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | DFB Laser | sfp-laser-dfb | 1× | 1 | · | part |
| 2 | Laser Driver | sfp-laser-driver-ic | 1× | 1 | · | part |
| 3 | Thermoelectric Cooler | sfp-laser-tec | 1× | 1 | · | part |
| 4 | Monitor Photodiode | sfp-laser-monitor-pd | 1× | 1 | · | part |
| 5 | Optical Isolator | sfp-isolator-optical | 1× | 1 | · | part |
| 6 | Attenuator | sfp-attenuator-pad | 1× | 1 | · | part |
| 7 | TOSA Board | sfp-tosa-pcb | 1× | 1 | · | part |
| 8 | SMD Passive (R/C/L) | smd-passives | 40× | 40 | · | part |
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Where the transmit optical subassembly is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $1–$80. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| sunnyoptical.com ↗ | Ningbo, CN | Optics & camera modules | 1,000 pcs | 8–12 wks |
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🇨🇳OFILM
ofilm.com ↗
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Shenzhen, CN | Camera modules | 1,000 pcs | 8–12 wks |
| vvdntech.com ↗ | Gurugram, IN | Electronics & camera modules | 1,000 pcs | 8–12 wks |
| truly.net ↗ | Shanwei, CN | Displays & camera modules | 1,000 pcs | 8–12 wks |
| aactechnologies.com ↗ | Singapore | Acoustics & optics | 1,000 pcs | 8–12 wks |