Polarization Stabilized Wavelength-Swept Laser: - General Photonics - #1

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GP-DS-WSL-001-10 2/8/10 General Photonics Corp. 5228 Edison Ave. Chino, CA 91710 Tel: 909.590.5473 Fax: 909.902.5536 Email: info@generalphotonics.com Website: www.generalphotonics.com Polarization Stabilized Wavelength-Swept Laser: ë.Sweep™ WSL-001 Applications: The WSL-001 is an OEM high-speed tunable laser for fiber sensor and OCT applications. The laser’s wavelength can be swept at a frequency of up to 16 kHz across a spectral range of up to 150 nm, with an output optical power of up to 20 mW. A power monitoring output is included to indicate the instantaneous laser output power at each wavelength. Other laser health parameters, such as laser average power, driving current, and chip temperature, are also provided via a digital interface. Finally, the laser incorporates automatic polarization optimization to guarantee long term stability. The WSL-001 is available with either a linearly polarized output (aligned to the slow axis of a PM fiber) or a depolarized output. An extension option includes a built-in variable optical attenuator (VOA) and a sweep monitor that provides two ë-trigger (TTL) signals to indicate the exact starting and ending wavelengths of each wavelength sweep, as well as an optical frequency clock (TTL) signal with a 50 GHz spacing to give users instantaneous relative optical frequency marks. The combination of the ë and clock triggers allows the absolute frequency or wavelength of the laser to be known at each instant during each wavelength sweep. This combination of features makes it easy to integrate the tunable laser into sensor interrogators, optical coherence tomography (OCT) equipment, spectrum analysis equipment, and general purpose test and measurement instruments. Specifications Center Wavelength Range 1060, 1310, 1550 nm ± 20 nm Spectral Range @ -10dB Cutoff Point1 1310/1550 nm: 120 ~ 150 nm; 1060 nm: ~ 60 nm, (specify when ordering) Repetition Rate up to 16 kHz (specify when ordering) Sweep Average Power1 10-20 mW (specify when ordering) Static Peak Output Power1 >20 mW Coherence Length (3 dB) >7 mm Signal-to-Spontaneous Emission Noise Ratio2 40 dB Polarization Extinction Ratio (PM output option) > 20 dB Degree of Polarization (Depolarized output option) < 5% Optical Connector FC/APC Variable Optical Attenuation Range* 20 dB Reference Wavelength Triggers* TTL pulse at start (ëmin) and end (ëmax) of each sweep Reference Wavelengths* ëmin and ëmax, user selectable Optical Frequency Clock Trigger* Type and Spacing TTL: 50 GHz standard3 Sweep Sync Pulse TTL, each sweep Instantaneous Power Monitor Analog, 0-5 volts Communication Interface RS-232 Operating Modes Static wavelength output Swept wavelength output Power Supply Voltages +12V (1A), -12V (1A), +5V (5A) Power Consumption 10 W (typical) Operating Temperature 0 ~ 50 °C Storage Temperature -20 ~ 70 °C) Dimensions 2" (H) x 6.4” (W) x 8” (L) Weight 2.3 kg (5.07 lbs) * With VOA and sweep monitor option. 1. Typical values for 1310nm 10 KHz module. Values may be different at other wavelengths or sweep rates. 2. Measured with static wavelength output. 3. 50 GHz standard. Contact General Photonics for special requests. Fiber sensor interrogation Optical Coherence Tomography (OCT) Medical imaging T est & measurement S pectrum analysis R &D Unique Features: P olarization stabilized output F ast sweep speed (up to 16 kHz) High output power (20 mW) Sweep start and end trigger (TTL)* Optical frequency clock output (TTL)* B uilt-in VOA* P ower monitoring function RS-232 interface Ordering Information: WSL – 001 – XX – XX – X Output Polarization: LS = Linear (slow axis) DP = Depolarized Configuration: A: Without VOA and sweep monitor B: With VOA and sweep monitor Wavelength: 10=1060 nm 13=1310 nm 15=1550 nm