PriTel, Inc 

Fiber Optic

PriTel, Inc.
P.O. Box 4025
Naperville, IL 60567,USA
Ph: 630-983-2200
Fx: 630-983-2260

1550nm Ultrafast Optical Clocks

Ultrafast Optical Clock

PriTel’s UOC Series of Ultrafast Optical Clocks are easy-to use actively-mode locked fiber lasers that provide high pulse repetition frequencies and high average output powers for 1550 nm time-division multiplexed communications R&D. The UOC can be used as a source for Solitons, RZ Optical Pulses and Optical Clocks

Unique Features Repetition rates from 1 to 40 GHz Variable*
Wavelengths from 1530 to 1565 nm Variable*
Pulsewidths from 1.6 to 10 ps Variable*
Embedded microprocessor control *
Information Display Panel

Why choose a our 1550nm fiber laser? Excellent contrast ratio (>40 dB)
Low timing jitter (typically <100 fs)
Chirp-free soliton pulses
Tunable Wavelength
High output power (10 mW at 10 GHz)
High pulse-repetition rates (upto 40 GHz)

Tunable Pulse Repetition Rate

For fine alignment of the pulsed laser source to the experimental application, the UOC is continuously adjustable without gaps for repetition rates ≥9 GHz. For example, the UOC can be tuned precisely to the OC-192 standard, 9.95328 GHz.

Quick-Change of Pulse width

The UOC Series has always offered user flexibility in tuning operating wavelength and pulse-repetition frequency. PriTel's Quick-Change Pulsewidth feature, standard on all UOC models, enables the user to change the operating pulsewidth of the UOC within minutes just by replacing a self-aligning cartridge.

Quick-Change Filter Cartridges are available in four standard operating pulsewidths (10 ps, 5 ps, 2.5 ps, and 1.6 ps). A kit of all four standard cartridges is available at a discount. Please inquire about cartridges for special pulsewidths.

Quick-Change Filter Cartridges can also be used in PriTel's Tunable Filter Module. These external filter modules provide variable center wavelength at a bandwidth fixed by the particular Quick-Change Filter cartridge. With an insertion loss < 0.6 dB and no alignment required, the fiber-pigtailed Tunable Filter Module combines high performance with flexibility and ease of use. The Tunable Filter Module has been used with high satisfaction in scanning supercontinuum pulses.

Embedded microprocessor control

PriTel has engineered the UOC Series for maximum stability and performance. An embedded microprocessor and phase-locked loop (PLL) technology, along with mounting the fiber laser inside a constant- temperature chamber, provide precise control of laser cavity length. Efficient integration of key optical components into subassemblies results in lower power consumption, higher average output power, and enhanced signal-to-noise ratio in the UOC Series.

The display on the front panel shows the status of the UOC's important operating parameters, including the phase-locked loop and the pump laser. Via the embedded microprocessor, these real-time data are available without the need for an external PC. After initial setup, the UOC requires no supervision.

Regenerative mode-locking option

For those researchers who will not be changing the repetition rate, the UOC-R Series uses regenerative mode-locking via an internal, tuned-RF loop to provide the harmonic-mode-locking signal for the laser. This series requires no external RF synthesizer. The UOC-R has an RF-sync output at the frequency of the laser that can be used for triggering and other synchronizations.

Available Performance Configurations

UOC Series
Click above for specifications in PDF Format
Pulse repetition rate 1 GHz, 5-14 GHz, 5-20 GHz, or 38-43 GHz, tunable (continuously tunable ≥9 GHz) Please inquire about other repetition rates.
Average output power Varies with pulsewidth and pulse repetition rate
(e.g., >20 mW at 2.5 ps and 10 GHz)
Peak power Typical = 1 W
Sideband suppression >70 dB
Temporal Pulsewidth FWHM <1.0 ps at optimized wavelength in 1535-1565 nm band
(1.6-10 ps available using optional Quick change filter cartridges)
Wavelength 1535 nm to 1565 nm, tunable
Timing Jitter <70fs (limited by external RF clock)
Phase locking control Embedded microcontroller
Transform-limited pulses with the following parameters:
Pulse width (ps) Spectral width (nm) Tunable wavelength (nm)  
≤1.6 1.7 1545-1560  
≤2.5 1.0 1540-1560  
≤5.0 0.5 1530-1560  
≤10.0 0.3 1530-1560  
Gain medium Er-doped silica fiber
Pump source 980 nm diode laser
Outputs 1 Primary, 1 Secondary/Photodiode, 2 Auxillary
Connectors FC/APC (other connectors available on request)
Operating temperature +15 to 30°C
Storage temperature -20 to 50°C
Operating Voltage 85-264 VAC at 47-63 Hz
Power consumption <250 W
Dimensions (2U) 9 cm x 48 cm x 38 cm
Weight 15 Kg

The UOC Series provides front-panel wavelength tuning, clock synchronization, and three secondary optical outputs for monitoring system performance by a photodiode, optical spectrum analyzer, or power meter. Normal operation of the UOC Series requires an external RF synthesizer or clock, supplied by the customer.
Typical Performance of PriTel's 1550nm Ultrafast Optical Clock at 10GHz

Click here to see Autocorrelation Traces, Optical Spectra and RF Spectra

Technical Specifications in PDF Format (Adobe® Acrobat® Reader™ )
        UOC Series    (Active Mode-Locking)
        UOC-R Series (Regenerative Mode-Locking)

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