Optical Time Delays

Integrated Solid State Variable Photonic Time Delay

Integrated Solid State Variable Photonic Time Delay

The SSTD Series Photonic Time Delay selectively routes optic signal through N delay segments whose delay time increase successively by a power of 2. Since each switching element allows the signal to either connect or bypass a delay segment, a delay T may be inserted that can take any value, in increments of ∆T, up to the maximum value T. This is achieved using patent pending non-mechanical configurations and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. All solid-state configurations eliminates the need for mechanical movement and organic materials. The device is designed to meet the most demanding switching requirements of ultra-high reliability and fast response time.
MEMS Variable Photonic Time Delay

MEMS Variable Photonic Time Delay

The MEMS Series Photonic Time Delay digitally varies the delay time inside a fiber with exceptionally large range (maximum delay) and precision (bit). It selectively routes optical signals through N fiber loops whose lengths increase successively by a power of 2. Since each switching element allows the signal to either pass or bypass a fiber loop, a delay T may be inserted, which can take any value (in increments of ∆T) up to the maximum value T. This is achieved using a patent pending MEMS configuration and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. The device is designed to meet the most demanding switching requirements of ultra-high reliability, vibration insensitivity, and low power consumption. It is a completed module with built-in driver.
Motorised Optical Delay Line - VariDelay

Motorised Optical Delay Line - VariDelay™

General Photonics’ motorised variable optical delay line provides precision optical path length adjustment of up to 560 ps, single-pass. Driven by a DC motor with an integrated encoder, the MDL-002 has a resolution of less than 0.3μm (1 fs). In addition, its advanced motion design guarantees longevity for long-term continuous operation. Low insertion loss and high reliability make this device ideal for integration in optical coherence tomography (OCT) systems, network equipment and test instruments for precision optical path length control or timing alignment. The MDL-002 is available in three configurations:
  • An integrated unit for use as a bench-top instrument for laboratory applications
  • With the optical head and control unit separated for easy incorporation into other equipment
  • An OEM version with a miniature controller board
All three versions can be remote controlled by a PC or a micro-processor through an RS-232 interface. The delay line is available with either single mode or PM fibre pigtails.
Solid State Variable Photonic Time Delay

Solid State Variable Photonic Time Delay

The SSTD Series Photonic Time Delay selectively routes optical signals through N fiber segments whose lengths increase successively by a power of 2. Since each switching element allows the signal to either connect or bypass a fiber segment, a delay T may be inserted, which can take any value (in increments of ∆T) up to the maximum value T. This is achieved using a patent pending non-mechanical configuration and activated via and electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. The solid-state configuration eliminates the need for mechanical movement and organic materials. The device is designed to meet the most demanding switching requirements of ultra-high reliability and fast response time.
Solid State Variable Photonic Time Delay Module

Solid State Variable Photonic Time Delay Module

The SSTD Series Photonic Time Delay Module selectively routes optical signals through N fiber segments whose lengths increase successively by a power of 2. The module therefore provides N bit resolution of digitally variable time delay with a maximum delay time defined by customer. This is achieved using a patented non-mechanical optical switching configuration and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. The solid-state configuration eliminates the need for mechanical movement and organic materials. The module has an input fiber and an out fiber. Front panel LEDs indicates the chosen fiber loops in each operation state. PM and high power versions are also available.
Solid State Variable PM Photonic Time Delay

Solid State Variable PM Photonic Time Delay

The SSTD PM Series Photonic Time Delay selectively routes optical signals through N fiber segments whose lengths increase successively by a power of 2. Since each switching element allows the signal to either connect or bypass a fiber segment, a delay T may be inserted, which can take any value (in increments of ∆T) up to the maximum value T. This is achieved using a patent pending non-mechanical configuration and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. The solid-state configuration eliminates the need for mechanical movement and organic materials. The device is designed to meet the most demanding switching requirements of ultra-high reliability and fast response time.