Optical Fiber Integrated Tap Monitor Array DetectorDescription
Lightwit's Integrated Tap Monitor Array (ITMA) W/I²C interface is a compact, multi-channel power- monitoring module. Functions of power reading, alarm and threshold setting are provided at firmware command level thru W/I²C interface. There is no hardware design, firmware programming or PD calibration work for user anymore, which greatly relieves user from heavy work load of design and manufacturing and provides great cost saving.
Lightwit can provide customized designs to meet specialized feature applications. Also, Lightwit offers modular assemblies that integrate other components to form a full function module or subsystem.
Features
I²C INTERFACE
Wide Dynamic Range (O+C+L Band) Low Insertion Loss & PDL
Superior Response Low Dark Current High ReliabilityApplications
DWDM Channel Monitoring Optical Amplifier (EDFA, Raman) Optical protection
ROADM
Variable Optical Attenuator (VOA) V-Mux
Electro-Optical Characteristics
Parameter |
SPECIFICATION |
Unit |
Wavelength Range |
1525-1610 | |
Through |
Insertion Loss*,** | 2% | <0.4 |
dB |
| 5% | <0.6 |
| 10% | <0.9 |
| Polarization Dependent Loss | <0.05 | dB |
| Return Loss* | >45 | dB |
| Tapped monitoring | Power monitoring accuracy
(@25°C 1550nm normal input power) |
+/-0.5 | dB |
Conditions | Input Optical Power | -30 to +10 | dBm |
Operating Temperature Rang
(<90%RH,no condensing) |
-5--+70 |
°C |
| Storage Temperature Rang (<90%RH,no condensing) |
-40--+85 |
°C |
| Fiber Type | SMF-28 |
* Measured without connector.
**Worst case over all operating condition, including wavelength, polarization and temperature.
| Pin# | I/O | Name | Description |
| 1 | I | VCC | 4.75-5.25V,Power(max0.3A) |
| 2 | I | GND | Ground |
| 3 | I | A0 | Slave I²C Address offset0(3.3V LVTTL) |
| 4 | I | A1 | Slave I²C Address offset1(3.3V LVTTL) |
| 5 | I | A2 | Slave I²C Address offset2(3.3V LVTTL) |
| 6 | I | A3 | Slave I²C Address offset3(3.3V LVTTL) |
| 7 | I | A4 | Slave I²C Address offset4(3.3V LVTTL) |
| 8 | I/O | SCL | I²C Clock( LVTTL),with no pull-up & pull-down Resistor in module |
| 9 | I/O | SDA | I²C Data( LVTTL),with no pull-up & pull-down Resistor in module |
| 10 | I | RESET | HW Reset, Active low(LVTTL) |
Precautions for Use
This device is susceptible to damage as a result of ESD(electrostatic discharge). Use of ground straps, anti static mats, and other standard ESD protective equipment is recommended when handling or testing an InGaAs PIN/APD or any other junction photodiode.
Lightwit can provide a remarkable range of customized optical solutions. For detail, please contact Lightwit's OEM design team for your requirements and ordering information.