TDC Series Time Delay Coils – Compact Low-Loss Optical Fiber Delay Coils
Compact, low-loss optical fiber coils from 10 m to 4 km for adding delay or controlling optical path length.
- Insertion loss
- < 0.3 dB/km typical, < 0.5 dB/km max.
- Winding loss
- <0.3 dB/km typical, <0.5 dB/km max
- Fiber length
- 10 m to 4 km
- Optical delay
- Nanoseconds to microseconds
Overview
The Luna TDC series are optical fiber coils for applications that need a set length of fiber to add delay or to control the optical path length of a test system. Fiber lengths range from 10 m to 4 km, and lengths can be specified to order.
The coils are wound with a special adhesive and specialized winding techniques that reduce the effect of winding on the fiber. The result is a compact coil with low added loss. Corning SMF-28 single-mode fiber is standard, Fujikura Panda polarization-maintaining fiber can be ordered, and other fiber types are available on request.
Coils up to 4 km long can be supplied in a durable aluminum enclosure, which protects them during transport and in varied environmental conditions in the field. Coils are also available without an enclosure for integration into modules. They can be ordered with FC/PC, FC/APC, SC/PC or SC/APC connectors, or with no connectors.
Key Features
- Low insertion loss
- Custom fiber lengths
- Compact for easy integration into modules
- Enclosure available
- Rugged construction
- Variety of fiber types
- Wide spectral response range
- Plug and play for easy use
Specifications
| Insertion loss |
< 0.3 dB/km typical, < 0.5 dB/km max.
Above intrinsic loss; values referenced without connectors
|
|---|---|
| Winding loss |
<0.3 dB/km typical, <0.5 dB/km max
In addition to intrinsic fiber loss and connector loss
|
| Fiber length | 10 m to 4 km |
| Optical delay |
Nanoseconds to microseconds
Depending on fiber length and type
|
| Operating wavelength | 1260 to 1650 nm standard, other specify |
| Fiber type |
SMF-28 standard, other specify
Web page: SMF-28 standard, others available
|
| Operating temperature | -40 to 85 °C |
|---|---|
| Storage temperature | -40 to 85 °C |
|
Dimensions
E
|
Enclosure: 6.00" (L) × 6.00" (W) × 1.59" (H) |
|---|
| Fiber length (m) | Example: 1000 = 1000m |
|---|---|
| Fiber type | SM: Corning SMF-28; PM: Fujikura Panda; Others specify |
| Enclosure | E = with enclosure |
| Connector type | FC/PC, FC/APC, SC/PC, SC/APC or NC = no connectors, Others specify |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Fiber optic gyroscopes (FOG)
- OEM modules for fiber optic sensing
- Optical path length control
- Optical buffer for optical networks
- Radar calibration and instrument calibration
- Laser spectroscopic measurement
- Time delay for opto-electronic oscillators
- Nonlinear fiber loop
- Optical network testing and analysis
- Optical packet switching, buffering, routing and input/output synchronization
Options & Accessories
| Option | Description |
|---|---|
| SM | Single-mode fiber: Corning SMF-28 |
| PM | Polarization-maintaining fiber: Fujikura Panda |
| E | With enclosure |
| FC/PC | FC/PC connectors |
| FC/APC | FC/APC connectors |
| SC/PC | SC/PC connectors |
| SC/APC | SC/APC connectors |
| NC | No connectors |
