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Optical Components
TOSA(Transmitter Optical Subassembly)is a Optical Subassembly which conversion of electrical signals into optical signals (E/O conversion),The main performance indexes of TOSA include optical power value (Po), central wavelength (λC) and so on.

ROSA(Receiver Optical Subassembly)is a Optical Subassembly which converting optical signals into electrical signals (O/E conversion),The main performance indexes are sensitivity (Sen) and so on. The unit of sensitivity is dBm, which means that under certain conditions, ROSA can receive the minimum optical power value.
Optical Components
TOSA 25G LR TOSA (DML)
Data rate up to 25.78Gb/s
Directly Modulated Laser with1310nm DFB-LD
Integrated monitor photodiode for DDM function
Integrated optical isolator for good return loss performance
Low threshold current
High bandwidth
LC Receptacle
Mechanical design Suitable for SFP28 Transceiver Applications
−45 to +85°C Operating temperature range 25G LR TOSA (DML)
25G CWDM TOSA(DML)- Uncooled
Data rate up to 25.78Gb/s
Uncooled and reliable laser device
High output power
Optimal fiber alignment to ensure high speed performance
Multi-channel emission CWDM for 10km link
LC port with CWDM isolator for good return loss performance
Narrow Linewidth(3MHz)
Built-in MPD for DDM function
Designed for Telcordia-GR468
-5℃ to +75℃ Operating temperature range
RoHS compliant 25G CWDM TOSA(DML)- Uncooled
25G CWDM TOSA(DML)-Refrigeration
Data rate up to 25.78Gb/s
Uncooled and reliable laser device
Multi-channel emission CWDM for 10km link
High output power
Optimal fiber alignment to ensure high speed performance
LC port with CWDM isolator for good return loss performance
Narrow Linewidth(3MHz)
Built-in MPD for DDM function
Built-in TEC and Rth
Designed for Telcordia-GR468
-40℃ to +85℃ Operating temperature range
RoHS compliant 25G CWDM TOSA(DML)-Refrigeration
25G LWDM TOSA(EML)
Date rates up to 25Gbps
Built-in EA modulator
Multi-channel emission(LanWDM)
High output power
Narrow Linewidth
Built-in Isolator, TEC, Rth and MPD
Designed for Telcordia-GR468
Operating temperature range:-40℃ to +85℃
RoHS compliantDate rates up to 25Gbps
Built-in EA modulator
Multi-channel emission(LanWDM)
High output power
Narrow Linewidth
Built-in Isolator, TEC, Rth and MPD
Designed for Telcordia-GR468
Operating temperature range:-40℃ to +85℃
RoHS compliant  25G LWDM TOSA(EML)
25G LWDM TOSA (DML Cooled LWDM TOSA)
Date rates up to 25Gbps
Multi-channel emission(LanWDM)
High output power
Narrow Linewidth(3MHz)
Built-in Isolator, TEC, Rth and MPD
Operating temperature range:-40℃ to +85℃
Designed for Telcordia-GR468
RoHS compliant 25G LWDM TOSA (DML Cooled LWDM TOSA)
25G MWDM TOSA
Date rates up to 25Gbps
Multi-channel emission(MWDM)
Low threshold current
High output power
Built-in Isolator, TEC, Rth and MPD
Operating temperature range:-40℃ to +85℃
Designed for Telcordia-GR468
RoHS compliant
25G DWDM TOSA
Date rates up to 25Gbps
Multi-channel emission(DWDM)
High output power
Narrow Linewidth(3MHz)
Long history of proven field reliability
Built-in Isolator, TEC, Rth and MPD
Designed for Telcordia-GR468
Operating temperature range:-40℃ to +85℃
RoHS compliant
10G LR TOSA (DML Uncooled FP TOSA)
1310nm Fabry-Perot LD
Built-in MPD
High stability
LC SM Receptacle Package 10G LR TOSA (DML Uncooled FP TOSA)
10G LR TOSA (DML Uncooled DFB TOSA)
1310nm DFB LD
Built-in MPD
Built-in Isolator
High stability
TOSA Package with LC SM Receptacle 10G LR TOSA (DML Uncooled DFB TOSA)
10G CWDM TOSA
Data Rate up to 10Gbps
Low Threshold
Multi-channel emission(CWDM)
TOSA Package with FPC and LC Receptacle
Transmission distance up to 40km or 80km
50Ω input impedance match
Built-in MPD
Integrated optical isolator for good return loss performance
Operating temperature range:-40℃ to +85℃
RoHS compliant 10G CWDM TOSA
10G DWDM TOSA
Data Rate up to 10Gbps
Low Threshold
Multi-channel emission(DWDM)
TOSA Package with FPC and LC Receptacle
Transmission distance up to 40km or 80km
50Ω input impedance match
Built-in MPD
Integrated optical isolator for good return loss performance
Operating temperature range:-40℃ to +85℃
RoHS compliant
10G DWDM TOSA
BOSA 25G BOSA 1270nm / 1330nm
25G BIDI SPF28 10km application
High output power & high sensitivity
LC receptacle
1270nm//1330nm continuous-mode transmitter with DML laser
1330nm//1270nm PIN-TIA receiver
Operating temperature range:-40℃ to +85℃
RoHS Compliant 25G BOSA 1270nm / 1330nm
10G BOSA 1270nm / 1330nm
10G BIDI SPF+ 10km application
High output power & high sensitivity
LC receptacle
1270nm//1330nm continuous-mode transmitter with DML laser
1330nm//1270nm PIN-TIA receiver
Operating temperature range:-40℃ to +85℃
RoHS Compliant 10G BOSA 1270nm / 1330nm
ROSA 25G LR ROSA
Data rates up to 25 Gbps.
Single +3.3V Power Supply.
-40℃ to +85℃ Operation.
Differential Output.
Received signal strength indicator (RSSI).
LC Receptacle, with flexible printed circuit board attached.
InGaAs PIN Detector and TIA inside.
With 1KΩ resistance