» Product Description |
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GouMax dual-band tunable optical filter (TOF) product is designed using its proprietary micro-optics and tunable technology. It is a 2-port voltage-controlled fiber-optic device with UART (RS232)/USB communication interface. The filter passband shape can be either Gaussian or flat-top. As schematically shown in Figure 1 below, when multiple DWDM channels are injected to the input port, the tunable filter selects one target channel to the output port and blocks all other channels. If the input is a wide-band spectrum, the tunable filter will select a target band for output and reject the rest band of spectrum.
GouMax dual-band TOF modules support 90 nm range within 1250~1650 nm range. Both Gaussian and flat-top profiles are available.
Figure 1: Dual-band tunable optical filter
Figure 2:
Two types of tunable optical filters (Gaussian and Flat-top profiles)
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| » Key Features |
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- Visible to NIR wavelength range
- Customer-specified pass bandwidth
- High speed tuning
- High wavelength repeatability
- No mechanical wear-outs
- Long tuning durability
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| » Key Applications |
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- Optical signal selection
- Optical performance monitoring
- Optical signal ASE noise suppression
- Optical Add/Drop multiplexing
- Optical signal tracking
- Wavelength interrogation
- Wavelength control of tunable laser
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| » Typical Specifications (Gaussian Profile) |
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For any dual-band Gaussian TOF module, the Operating wavelength range is 90 nm, specified as Center wavelength ± 45 nm.
For details, please request specifications from GouMax Sales.
| Parameter |
Unit |
Specification |
| Wavelength Tuning Range |
nm |
Center wavelength ± 45 nm |
| Passband Width at -3.0 dB |
GHz |
> 50 (Typical) |
| Passband Width at -20 dB |
GHz |
< 125 |
| Peak Insertion Loss |
dB |
< 4.0 (Without connectors) |
| PDL |
dB |
< 0.3 (At CW) |
| Isolation at 50 GHz |
dB |
30 |
| PMD |
ps |
< ±10 (Within CW±5 GHz) |
| Wavelength Tuning Resolution |
GHz |
< 0.5 |
| Wavelength Accuracy |
GHz |
<±4 |
| Wavelength Repeatability |
GHz |
< ±1 |
| Wavelength Temperature Dependence |
pm/°C |
±1 (Typical) |
| Return Loss |
dB |
> 40 |
| Maximum Input Optical Power |
mW |
300 |
| Tuning Speed |
s |
< 0.1 (Wavelength to Wavelength) |
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| » Typical Specifications (Flat-top Profile) |
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For any duale-band flat-top TOF module, the Operating wavelength range is 90 nm, specified as Center wavelength ± 45 nm.
For details, please request specifications from GouMax Sales.
| Parameter |
Unit |
Specification |
| Wavelength Tuning Range |
nm |
Center wavelength ± 45 nm |
| Passband Width at -1.0 dB |
GHz |
>44 |
| Passband Width at -20 dB |
GHz |
< 130 |
| Peak Insertion Loss |
dB |
< 5.0 (Without connectors) |
| PDL |
dB |
< 0.3 (At CW) |
| Isolation at 50 GHz |
dB |
30 |
| PMD |
ps |
< ±10 (Within CW±5 GHz) |
| Wavelength Tuning Resolution |
GHz |
< 0.5 |
| Wavelength Accuracy |
GHz |
< ±4 |
| Wavelength Repeatability |
GHz |
< ±1 |
| Wavelength Temperature Dependence |
pm/°C |
±1 (Typical) |
| Return Loss |
dB |
> 40 |
| Maximum Input Optical Power |
mW |
300 |
| Tuning Speed |
s |
< 0.1 (Wavelength to Wavelength) |
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| » Other Information |
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