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  • Monolithic bipolar-, CMOS-, and BiCMOS-receiver OEICs
    Thereby, according to Eq. (1)bandwidths larger than 1.5 GHz seem possible with bipolar npn transistors in the amplifier due to f~ > 10 GHz for modern 0.8 pm BiCMOS processes. For these bandwidths, bit rates of more than 2 GBit/s seem possible in the non-return-to-zero (NRZ) mode with X= 780 nm , whereby the bit rate is limited … … 0.26 ns) for the PIN photodiode with an intrinsic layer …
  • Generation of a coherent near-infrared Kerr frequency comb in a monolithic microresonator with normal GVD
    The threshold cw power was approximately the same as one in the experiment with 780 nm light. The comb generated 9.84 GHz RF signal with a high speed photodiode . … spectral purity characterized with single side- band phase noise of −106 dBc/Hz at 10 kHz frequency offset …
  • High power single-frequency 780-nm fiber laser source for Rb trapping and cooling applications
    A small amount of the 780 nm laser light (some mW) can be then sent, via a sampling output, into a saturated-absorption spectroscopy setup for frequency locking the laser emission to a rubidium transition with an error signal applied to the … The tunability of the laser is around 200 GHz by varying the seeder temperature and 10 GHz by adjusting its current. … atomic line) by measuring the beat-note frequency between both lasers recorded on a fibered fast photodiode .
  • Integrated Silicon Optoelectronics
    For the wavelengths 780 and 850 nm , a thickness of at least 10 µm is necessary for the so-called intrinsic layer of a PIN photodiode , due to the low optical ab- sorption coefficient of silicon for wavelengths larger than about 700 … … 1016 cm−3 for high-speed bipolar transistors with transit frequencies in the 10 GHz range or above.
  • Optical Interconnects
    (a) Cross-sectional view of the back-side-illuminated RCE Ge–SOI Schot- tky photodiode , (b) Temporal response of a 10 μm diameter detector at −3 V and λ = 1, 550 nm . annealing (TCA) ( 780 –900◦ ) to lower the dislocation density. … to 0.6 μm, the device exhibits a 3 dB bandwidth of 29 GHz under a reverse …
  • Design of a dual species atom interferometer for space
    We anticipate a long- term frequency stability of better than 3·10− 10 by stabilizing the laser with … A separate fibered, low-power PPLN generates 780 nm light output, which is guided towards a fiber-optical splitter system to distribute and overlap the frequency-doubled reference laser light with the light of four microintegrated diode laser modules (see Chapter 6 … The generated beat notes, typically in the GHz regime, are detected with fast photodiodes and subsequently used for frequency stabilization of the four diode laser modules.
  • Design and implementation of high-speed planar Si photodiodes fabricated on SOI substrates
    A more common approach has been to fabricate planar photodiodes on Si on insulator (SOI) wafers [6]–[ 10 ]. … that was fabricated on an SOI wafer with a top Si film thickness of 100 nm [6]. For 780 -nm excitation, the device achieved a bandwidth of 140 GHz , but its responsivity was only 5.7 mA/W.
  • Measurement of optical frequencies and frequency ratios
    Approximately 30 mW of the laser output is coupled into a piece of microstructure fibre 10 cm long with a core diameter of 1.7 µm and a zero- GVD wavelength of 780 nm [70]. Thus the 103rd harmonic of frep at 10 GHz has been detected with a fast InGaAs PIN photodiode (PD) after spectral filtering with a fused-silica etalon.
  • Enhanced frequency up-conversion in Rb vapor
    Fig. 2. a) Experimental schematic, abbreviations used are: PD ( photodiode ), VC (va- por cell) N/PBS (non/polarizing beamsplitter) and ECDL (external cavity diode laser). b) Power in the coherent 420 nm beam as a function of 780 nm (red) and 776nm (black) input … … light close to two-photon resonance of the input lasers at ∆780 = −∆776 ∼= 1.6 GHz . Optimal conditions include a Rb vapor pressure of 10 −3 mbar and co- circularly polarized input beams …
  • Exploration of the origin of random error in spectrum intensity measured with THz-TDS
    The fs-laser has 100 fs pulses at 780 nm with an 80 MHz repetition rate and the mean output power is 20 mW. … resolution and a scan speed of the optical-delay stage are 24.4 GHz and 12 μm/sec … … two beams through a beam splitter arranging to be an incident angle of 10 degree; the transmitted … The laser power was measured using a Si- photodiode , followed by a low-pass filter and a …